Ammonia gas supply system
By using a water bath evaporator and a pressure regulating valve group in the ammonia supply system to convert liquid ammonia into gaseous state, and using a heating and pressure stabilizing tank to stabilize ammonia supply, the problem of small ammonia storage and frequent replacement in the prior art is solved. , realizes dynamic pressure adjustment and efficient ammonia supply.
Patent Information
- Application Number
- CN202420547930.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-20
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-20
AI Technical Summary
The existing ammonia supply system cannot effectively convert liquid ammonia into gaseous ammonia, resulting in small storage amounts and frequent replacement of ammonia sources.
An ammonia supply system was designed, using a water bath evaporator, combined with a pressure regulating valve group and a heating pressure stabilization tank, to convert liquid ammonia into gas through the evaporator, and the pressure was adjusted by feedback through the gas consumption meter to ensure the ammonia required by the engine. Air pressure.
The storage volume of the ammonia supply system is increased, the number of times the ammonia source is replaced is reduced, and the supply of ammonia can be dynamically adjusted according to the pressure demand of the engine, solving the problem of insufficient conversion of liquid ammonia into ammonia.
Smart Images
Figure CN222164463U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of ammonia supply, and specifically relates to an ammonia supply system. Background Art
[0002] Ammonia is a commonly used substance in industry. It is needed in the semiconductor industry, liquid crystal panel industry or optoelectronic industry. The current ammonia supply system directly delivers gaseous ammonia, and its pressure value is relatively easy to adjust. However, the volume of gaseous ammonia is large, resulting in a relatively small amount of ammonia stored in the ammonia supply system. Therefore, if liquid ammonia is used and then converted into ammonia before use, the storage capacity of ammonia in the ammonia supply system can be increased, thereby reducing the number of times the ammonia source needs to be replaced. Utility Model Content
[0003] The purpose of this application is mainly to address the shortcomings of the prior art. An ammonia supply system is designed by setting a water bath evaporator in combination with a pressure regulating valve group and a heating pressure-stabilizing tank. The system can convert liquid ammonia into gaseous ammonia. At the same time, the pressure of the supplied ammonia can be adjusted according to the feedback from the gas consumption meter to ensure the engine's requirements for the ammonia pressure value, thereby solving the problem that there is currently no supply system for converting liquid ammonia into ammonia.
[0004] In order to achieve the above purpose, the technical solution adopted in this application is:
[0005] An ammonia supply system comprises a hydraulic cylinder, wherein the output end of the hydraulic cylinder is connected to the liquid ammonia input end of a water bath evaporator through a liquid supply valve group, the ammonia output end of the water bath evaporator is connected to a pressure regulating valve group, the output end of the pressure regulating valve group is connected to the ammonia input end of a gas consumption meter, the output end signal of a control system is connected to the pressure regulating valve group, the input end signal of the control system is connected to the signal output end of the gas consumption meter, and the ammonia output end of the gas consumption meter is connected to the input end of a heating and pressure-stabilizing tank.
[0006] Preferably, the liquid supply valve group includes a first liquid supply stop valve, a pressure gauge stop valve, a liquid supply pressure gauge, and a second liquid supply stop valve, the input end of the first liquid supply stop valve is connected to the output end of the hydraulic cylinder, the output end of the first liquid supply stop valve is connected to the input end of the liquid supply pressure gauge, the output end of the liquid supply pressure gauge is connected to the second liquid supply stop valve, and the output end of the second liquid supply stop valve is connected to the liquid ammonia input end of the water bath evaporator.
[0007] Preferably, the water bath evaporator comprises an evaporator body, in which a liquid ammonia containing chamber and a heating containing chamber are provided, and the evaporator body is provided with a heating liquid inlet, a heating liquid outlet, a liquid ammonia inlet, an ammonia gas outlet, a drain valve, and a first pressure relief valve, the liquid ammonia containing chamber is located in the heating containing chamber, the liquid ammonia inlet and the ammonia gas outlet are both connected to the interior of the liquid ammonia containing chamber through a first pipe penetrating into the interior of the heating containing chamber, the drain valve is connected to the bottom of the liquid ammonia containing chamber, the first pressure relief valve is connected to the top of the liquid ammonia containing chamber, the heating liquid inlet is connected to the inner bottom of the heating containing chamber, and the heating liquid outlet is connected to the inner top of the heating containing chamber.
[0008] Preferably, a liquid filling stop valve is provided at the heating liquid inlet, and a temperature meter is provided on the evaporator body, and the temperature meter is used to detect the temperature in the heating accommodating chamber.
[0009] Preferably, the pressure regulating valve group includes a straight air path, a first air path, and a second air path. The ammonia output end of the water-bath evaporator is provided with a first four-way pipe, the input end of the first four-way pipe is connected to the ammonia output end of the water-bath evaporator, the first output end of the first four-way pipe is connected to the input end of the straight air path, the second output end of the first four-way pipe is connected to the input end of the first air path, the third output end of the first four-way pipe is connected to the input end of the second air path, the first input end of the second four-way pipe is connected to the output end of the straight air path, the second input end of the second four-way pipe is connected to the output end of the first air path, the third input end of the second four-way pipe is connected to the output end of the second air path, and the output end of the second four-way pipe is connected to the gas consumption meter. A first stop valve is provided between the two ends of the straight air path, a second stop valve is provided between the two ends of the first air path, a third stop valve is provided between the two ends of the second air path, and pressure regulating valves are provided between the two ends of the first air path and between the two ends of the second air path.
[0010] Preferably, an ammonia coarse filter is provided at the input end of the first four-way pipe, and an ammonia fine filter is provided at the output end of the second four-way pipe.
[0011] Preferably, a second pressure relief valve and a pressure detection gauge are provided between both ends of the first air passage and between both ends of the second air passage.
[0012] Preferably, the heating and pressure-stabilizing tank includes a main tank and a cache tank, the main tank is connected to the interior of the cache tank through a second pipe, the input end of the main tank is connected to the output end of the gas consumption meter, the output end of the main tank is connected to the first input end of a three-branch pipe, the output end of the cache tank is connected to the second input end of the three-branch pipe, a switch valve is provided on the output end of the three-branch pipe, a first flow valve is provided on the first input end and the second input end of the three-branch pipe, and a second flow valve is provided between the two ends of the second pipe.
[0013] Compared with the prior art, this application has the following beneficial effects:
[0014] 1. The present application designs an ammonia supply system by setting a water bath evaporator in combination with a pressure regulating valve group and a heating pressure-stabilizing tank, which can convert liquid ammonia into gaseous ammonia. At the same time, the pressure of the supplied ammonia can be adjusted according to the feedback of the gas consumption meter to ensure the engine's requirements for the ammonia pressure value, thereby solving the problem that there is currently no supply system for converting liquid ammonia into ammonia.
[0015] 2. The present application detects the pressure of the liquid ammonia input through a liquid supply pressure gauge, and the first liquid supply stop valve and the second liquid supply stop valve are used to control the liquid ammonia output from the hydraulic cylinder. At the same time, the setting of the first liquid supply stop valve and the second liquid supply stop valve facilitates the replacement of the liquid supply pressure gauge.
[0016] 3. In the present application, liquid ammonia enters into the liquid ammonia containing chamber, and the heating heat enters into the heating containing chamber from the heating liquid inlet, heating the liquid ammonia in the liquid ammonia containing chamber, so that the liquid ammonia is converted into ammonia gas and enters into the pressure regulating valve group from the ammonia gas outlet, wherein the setting of the drain valve is mainly to drain the substances in the liquid ammonia containing chamber when cleaning the water bath evaporator, and the setting of the first pressure relief valve is to relieve the pressure when the pressure in the liquid ammonia containing chamber is too high. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the first embodiment of the present application;
[0018] Figure 2 It is a schematic structural diagram of the second embodiment of the present application.
[0019] Among them, 1. hydraulic cylinder; 2. gas consumption meter; 3. first liquid supply stop valve; 4. second pipeline; 5. liquid supply pressure gauge; 6. second liquid supply stop valve; 7. evaporator body; 8. liquid ammonia holding chamber; 9. heating holding chamber; 10. first pipeline; 11. pressure relief valve; 12. first drain valve; 13. liquid filling stop valve; 14. thermometer; 15. straight air path; 16. first air path; 17. second air path; 18. first four-way pipe; 19. second four-way pipe; 20. first stop valve; 21. second stop valve; 22. pressure regulating valve; 23. second pressure relief valve; 24. pressure detection gauge; 25. main tank; 26. buffer tank; 27. three-way pipe; 28. switch valve; 29. first flow valve; 30. third stop valve; 31. third pressure relief valve. DETAILED DESCRIPTION
[0020] like Figure 1-2 As shown, embodiment 1: an ammonia supply system, comprising a hydraulic cylinder 1, the output end of the hydraulic cylinder 1 is connected to the liquid ammonia input end of a water bath evaporator through a liquid supply valve group, the ammonia output end of the water bath evaporator is connected to a pressure regulating valve group, the output end of the pressure regulating valve group is connected to the ammonia input end of a gas consumption meter 2, the input end of a control system is connected to the signal output end of the gas consumption meter 2, the output end signal of the control system is connected to the pressure regulating valve group, and the ammonia output end of the gas consumption meter 2 is connected to the input end of a heating pressure-stabilizing tank.
[0021] In this embodiment, when in use, liquid ammonia is pressurized and installed in the hydraulic cylinder 1. After the liquid supply valve group is opened, the liquid ammonia enters the water bath evaporator. Due to the heating effect of the water bath evaporator, the liquid ammonia is changed into gaseous state and becomes ammonia gas. The ammonia gas then enters the pressure regulating valve group. The control system adjusts the pressure regulating valve group according to the feedback of the gas consumption meter 2, so that the pressure of the ammonia gas output by the pressure regulating valve group reaches a preset pressure value, and then is transmitted to the heating and pressure stabilizing tank and delivered to the engine. The setting of the heating and pressure stabilizing tank can stabilize the ammonia gas with stable air pressure after the pressure regulating valve group is debugged and delivered to the engine.
[0022] Embodiment 2:
[0023] On the basis of the first embodiment, the liquid supply valve group includes a first liquid supply stop valve 3, a liquid supply pressure gauge 5, and a second liquid supply stop valve 6, the input end of the first liquid supply stop valve 3 is connected to the output end of the hydraulic cylinder 1, the output end of the first liquid supply stop valve 3 is connected to the input end of the liquid supply pressure gauge 5, the output end of the liquid supply pressure gauge 5 is connected to the second liquid supply stop valve 6, and the output end of the second liquid supply stop valve 6 is connected to the liquid ammonia input end of the water bath evaporator.
[0024] After such setting, the pressure of the input to the liquid ammonia is detected by the liquid supply pressure gauge 5, and the first liquid supply stop valve 3 and the second liquid supply stop valve 6 are used to control the liquid ammonia output from the hydraulic cylinder 1. At the same time, the setting of the first liquid supply stop valve 3 and the second liquid supply stop valve 6 facilitates the replacement of the liquid supply pressure gauge 5.
[0025] As a preferred embodiment, the water bath evaporator includes an evaporator body 7, in which a liquid ammonia accommodating chamber 8 and a heating accommodating chamber 9 are provided, and a heating liquid inlet, a heating liquid outlet, a liquid ammonia inlet, an ammonia gas outlet, a drain valve 12, and a first pressure relief valve 11 are provided on the evaporator body 1. The liquid ammonia accommodating chamber 8 is located in the heating accommodating chamber 9, and the liquid ammonia inlet and the ammonia gas outlet are both connected to the interior of the liquid ammonia accommodating chamber 8 through a first pipe 10 that penetrates into the interior of the heating accommodating chamber 9. The drain valve 12 is connected to the bottom of the liquid ammonia accommodating chamber 8, the first pressure relief valve 11 is connected to the top of the liquid ammonia accommodating chamber 8, the heating liquid inlet is connected to the inner bottom of the heating accommodating chamber 9, and the heating liquid outlet is connected to the inner top of the heating accommodating chamber 9.
[0026] After such arrangement, liquid ammonia enters the liquid ammonia containing chamber 8, and the heating heat enters the heating containing chamber 9 from the heating liquid inlet, heating the liquid ammonia in the liquid ammonia containing chamber 8, so that the liquid ammonia is converted into ammonia gas and enters the pressure regulating valve group from the ammonia gas outlet. Among them, the setting of the drain valve 12 is mainly to drain the substances in the liquid ammonia containing chamber 8 when cleaning the water bath evaporator, and the setting of the first pressure relief valve 11 is to relieve the pressure when the pressure in the liquid ammonia containing chamber 8 is too high.
[0027] As a preferred mode, a liquid filling stop valve 13 is provided at the heating liquid inlet, and a thermometer 14 is provided on the evaporator body 7, and the thermometer 14 is used to detect the temperature in the heating accommodating chamber 9. The amount of heating liquid entering the heating accommodating chamber 9 is controlled by setting the liquid filling stop valve 13.
[0028] As a preferred embodiment, the pressure regulating valve group includes a straight air path 15, a first air path 16, and a second air path 17. The ammonia output end of the water bath evaporator is provided with a first four-way pipe 18, the input end of the first four-way pipe 18 is connected to the ammonia output end of the water bath evaporator, the first output end of the first four-way pipe 18 is connected to the input end of the straight air path 15, the second output end of the first four-way pipe 18 is connected to the input end of the first air path 16, the third output end of the first four-way pipe 18 is connected to the input end of the second air path 17, and the first input end of the second four-way pipe 19 is connected to the The output end of the straight air passage 15, the second input end of the second four-way pipe 19 is connected to the output end of the first air passage 16, the third input end of the second four-way pipe 19 is connected to the output end of the second air passage 17, the output end of the second four-way pipe 19 is connected to the gas consumption meter 2, a first stop valve 20 is arranged between the two ends of the straight air passage 15, a second stop valve 21 is arranged between the two ends of the first air passage 16, a third stop valve 30 is arranged between the two ends of the second air passage 17, and a pressure regulating valve 22 is arranged between the two ends of the first air passage 16 and between the two ends of the second air passage 17. After such arrangement, the straight air passage 15 is generally used to transport ammonia to the engine, at which time, the second stop valve 21 on the first air passage 16 and the third stop valve 30 on the second air passage 17 are both closed; when the straight air passage 15 is repaired, the first air passage 16 or the second air passage 17 can be opened according to the situation.
[0029] As a preferred mode, an ammonia coarse filter is provided at the input end of the first cross-tube 18, and an ammonia fine filter is provided at the output end of the second cross-tube 19. The ammonia coarse filter and the ammonia fine filter are provided to filter the ammonia before entering the engine.
[0030] As a preferred embodiment, a second pressure relief valve 23 and a pressure detection gauge 24 are provided between both ends of the first air passage 16 and between both ends of the second air passage 17. The second pressure relief valve 23 is provided to ensure the pressure on the first air passage 16 and the second air passage 17.
[0031] As a preferred mode, the heating and stabilizing tank includes a main tank 25 and a buffer tank 26. The main tank 25 is connected to the inside of the buffer tank 26 through a second pipe 4. The input end of the main tank 25 is connected to the output end of the gas consumption meter 2. The output end of the main tank 25 is connected to the first input end of the three-branch pipe 27. The output end of the buffer tank 26 is connected to the second input end of the three-branch pipe 27. A switch valve 28 is provided on the output end of the three-branch pipe 27. A first flow valve 29 is provided on the first input end and the second input end of the three-branch pipe 27. A second flow valve 31 is provided between the two ends of the second pipe 4. After such arrangement, the pressure value in the main tank 25 is shared by the buffer tank 26, thereby ensuring the pressure in the main tank 25. At the same time, when the ammonia output in the main tank 25 is insufficient, the buffer tank 26 can also be used to assist.
Claims
1. An ammonia supply system, characterized in that: The invention comprises a hydraulic cylinder (1), wherein the output end of the hydraulic cylinder (1) is connected to the liquid ammonia input end of a water bath evaporator through a liquid supply valve group, the ammonia output end of the water bath evaporator is connected to a pressure regulating valve group, the output end of the pressure regulating valve group is connected to the ammonia input end of a gas consumption meter (2), the output end signal of a control system is connected to the pressure regulating valve group, the input end signal of the control system is connected to the signal output end of the gas consumption meter, and the ammonia output end of the gas consumption meter (2) is connected to the input end of a heating and pressure stabilizing tank.
2. An ammonia supply system according to claim 1, characterized in that: The liquid supply valve group comprises a first liquid supply stop valve (3), a liquid supply pressure gauge (5), and a second liquid supply stop valve (6); the input end of the first liquid supply stop valve (3) is connected to the output end of the hydraulic cylinder (1); the output end of the first liquid supply stop valve (3) is connected to the input end of the liquid supply pressure gauge (5); the output end of the liquid supply pressure gauge (5) is connected to the second liquid supply stop valve (6); and the output end of the second liquid supply stop valve (6) is connected to the liquid ammonia input end of the water bath evaporator.
3. An ammonia supply system according to claim 1, characterized in that: The water bath evaporator comprises an evaporator body (7), wherein a liquid ammonia containing chamber (8) and a heating containing chamber (9) are arranged in the evaporator body (7), and a heating liquid inlet, a heating liquid outlet, a liquid ammonia inlet, an ammonia gas outlet, an emptying valve (12), and a first pressure relief valve (11) are arranged on the evaporator body (7); the liquid ammonia containing chamber (8) is located in the heating containing chamber (9), the liquid ammonia inlet and the ammonia gas outlet are both connected to the interior of the liquid ammonia containing chamber (8) through a first pipe (10) penetrating into the interior of the heating containing chamber (9), the emptying valve (12) is connected to the bottom of the liquid ammonia containing chamber (8), the first pressure relief valve (11) is connected to the top of the liquid ammonia containing chamber (8), the heating liquid inlet is connected to the inner bottom of the heating containing chamber (9), and the heating liquid outlet is connected to the inner top of the heating containing chamber (9).
4. An ammonia supply system according to claim 3, characterized in that: A liquid filling stop valve (13) is provided at the heating liquid inlet, and a temperature gauge (14) is provided on the evaporator body (7). The temperature gauge (14) is used to detect the temperature in the heating accommodating chamber (9).
5. An ammonia supply system according to claim 1, characterized in that: The pressure regulating valve group comprises a straight air path (15), a first air path (16), and a second air path (17); a first four-way pipe (18) is provided at the ammonia output end of the water bath evaporator; an input end of the first four-way pipe (18) is connected to the ammonia output end of the water bath evaporator; a first output end of the first four-way pipe (18) is connected to the input end of the straight air path (15); a second output end of the first four-way pipe (18) is connected to the input end of the first air path (16); a third output end of the first four-way pipe (18) is connected to the input end of the second air path (17); a first input end of the second four-way pipe (19) is connected to the input end of the straight air path (15); The output end of the second four-way pipe (19) is connected to the output end of the first air passage (16), the third input end of the second four-way pipe (19) is connected to the output end of the second air passage (17), the output end of the second four-way pipe (19) is connected to the gas consumption meter (2), a first stop valve (20) is arranged between the two ends of the straight air passage (15), a second stop valve (21) is arranged between the two ends of the first air passage (16), a third stop valve (30) is arranged between the two ends of the second air passage (17), and pressure regulating valves (22) are arranged between the two ends of the first air passage (16) and between the two ends of the second air passage (17).
6. An ammonia supply system according to claim 5, characterized in that: An ammonia coarse filter is provided at the input end of the first cross-tube (18), and an ammonia fine filter is provided at the output end of the second cross-tube (19).
7. An ammonia supply system according to claim 5, characterized in that: A second pressure relief valve (23) and a pressure detection gauge (24) are provided between the two ends of the first air passage (16) and between the two ends of the second air passage (17).
8. An ammonia supply system according to claim 1, characterized in that: The heating and stabilizing tank comprises a main tank (25) and a buffer tank (26); the main tank (25) is connected to the interior of the buffer tank (26) via a second pipe (4); the input end of the main tank (25) is connected to the output end of the gas consumption meter (2); the output end of the main tank (25) is connected to the first input end of a three-branch pipe (27); the output end of the buffer tank (26) is connected to the second input end of the three-branch pipe (27); a switch valve (28) is provided on the output end of the three-branch pipe (27); a first flow valve (29) is provided on the first input end and the second input end of the three-branch pipe (27); and a second flow valve (31) is provided between the two ends of the second pipe (4).