Ammonia refrigeration system
By introducing automatic control components into the ammonia refrigeration system, and using level gauges and controllers to achieve automated level control of the ammonia storage tank and low-pressure circulating tank, the problems of large level reading errors and safety hazards have been solved, and the accuracy and safety of the system have been improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CARLSBERG CHONGQING BEER CO LTD SHIZHU BRANCH
- Filing Date
- 2025-06-05
- Publication Date
- 2026-06-23
AI Technical Summary
In ammonia refrigeration systems, liquid level readings for ammonia storage tanks and low-pressure circulating tanks are commonly done using level gauges. This requires refrigeration workers to manually open and close the liquid supply valves based on the level gauge readings, which can easily lead to significant errors and pose safety hazards.
An automatic control component is adopted, including a controller and at least two level gauges. The level gauges are connected to the controller to monitor the level changes of the ammonia storage tank and the low-pressure circulation tank, and control the opening and closing of the delivery pipeline through the controller to achieve automatic control.
It improves the accuracy of ammonia liquid control and the safety of system operation, reduces human error, and enhances system safety.
Smart Images
Figure CN224398044U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of ammonia refrigeration technology, and more particularly to an ammonia refrigeration system. Background Technology
[0002] Ammonia refrigeration systems are industrial refrigeration systems that use ammonia (NH3) as a refrigerant. Due to their high refrigeration efficiency and environmental friendliness, they are widely used in various refrigeration fields. In beer production, ammonia refrigeration systems are typically used to supply cooling to the fermentation tanks to meet the cooling requirements of beer production.
[0003] In related technologies, ammonia refrigeration systems generally include an ammonia storage tank, an ammonia pump, a low-pressure circulating tank, a refrigeration unit, and an ammonia leak alarm. The ammonia pump transports liquid ammonia from the storage tank to the low-pressure circulating tank and then to the fermentation tank. The liquid ammonia absorbs heat and vaporizes, carrying away the heat from the fermenting liquid. The ammonia is then transported to the low-pressure circulating tank in a two-phase gas-liquid state. After gas-liquid separation, the gaseous ammonia is transported to the refrigeration unit for compression and condensation, forming liquid ammonia, which is then transported back to the storage tank to form a cycle.
[0004] However, in ammonia refrigeration systems, the liquid level of ammonia storage tanks and low-pressure circulating tanks is generally read using level gauges. This requires refrigeration workers to manually open and close the liquid supply valves based on the level gauge readings, which can easily lead to large errors and pose safety hazards. Utility Model Content
[0005] This application provides an ammonia refrigeration system to overcome the problem that in the prior art, the liquid level reading of ammonia storage tanks and low-pressure circulation tanks in ammonia refrigeration systems is generally done using level gauges, which requires refrigeration workers to manually open and close the liquid supply valves based on the level gauge readings, which is prone to large errors and poses safety hazards.
[0006] This application provides an ammonia refrigeration system, comprising: an ammonia production device, the ammonia production device including an ammonia storage tank and a low-pressure circulation tank, the ammonia storage tank being installed in an ammonia storage workshop, the low-pressure circulation tank being installed in a refrigeration workshop, the outlet of the ammonia storage tank being connected to the low-pressure circulation tank via a conveying pipeline; and an automatic control component, the automatic control component including a controller and at least two level gauges, the at least two level gauges being signal-connected to the controller, the at least two level gauges being respectively installed in the ammonia storage tank and the low-pressure circulation tank, the controller being used to control the on / off state of the conveying pipeline between the ammonia storage tank and the low-pressure circulation tank based on the monitoring information of the level gauges.
[0007] In one possible implementation, the automatic control component further includes a regulating valve disposed on the delivery pipeline. The regulating valve is connected to the signal output terminal of the controller, which controls the opening and closing of the regulating valve based on the monitoring information of the level gauge, thereby controlling the on / off state of the delivery pipeline between the ammonia storage tank and the low-pressure circulation tank.
[0008] In one possible implementation, the level gauge is a glass plate level gauge, the regulating valve is a solenoid valve, and the controller is a PID controller.
[0009] In one possible implementation, the ammonia production equipment further includes a refrigeration unit, the inlet of which is connected to the outlet of the low-pressure circulating tank, and the outlet of which is connected to the inlet of the ammonia storage tank. The refrigeration unit includes multiple refrigeration compressors, which are connected to the outside through a pressure relief pipe, and a double-seat safety valve is installed at the end of the pressure relief pipe.
[0010] In one possible implementation, the ammonia refrigeration system further includes an emergency response device connected to the ammonia generating equipment. The emergency response device is used to monitor whether ammonia is leaking in the ammonia generating equipment and to trigger an alarm. The ammonia generating equipment is electrically connected to a first power source, and the emergency response device is electrically connected to a second power source, which is independently powered by the first power source.
[0011] In one possible implementation, the second power source includes an external power source and a built-in battery, the built-in battery being configured to supply power to the emergency response device when the external power source is unavailable.
[0012] In one possible implementation, the emergency response equipment includes a first alarm and multiple ammonia sensors, with the signal output terminal of each ammonia sensor connected to the first alarm, and the multiple ammonia sensors being installed at different locations within the refrigeration workshop.
[0013] The ammonia sensor can detect ammonia concentrations in a range greater than or equal to 0 ppm and less than or equal to 10,000 ppm.
[0014] The first alarm device includes a first-level alarm response, a second-level alarm response, and a third-level alarm response;
[0015] The threshold for triggering the Level 1 alarm response is a detected ammonia concentration greater than or equal to 25 ppm and less than 100 ppm.
[0016] The threshold for triggering the secondary alarm response is a detected ammonia concentration greater than or equal to 100 ppm and less than 10000 ppm.
[0017] The threshold for triggering the Level 3 alarm response is a detected ammonia concentration of 10,000 ppm.
[0018] In one possible implementation, the emergency response equipment further includes a second alarm, which is signal-connected to the controller. The second alarm is used to monitor whether the pressure of the ammonia storage tank and the low-pressure circulation tank exceeds the limit based on the level gauge and to trigger an alarm.
[0019] In one possible implementation, both the first alarm and the second alarm are audible and visual alarms.
[0020] In one possible implementation, the system further includes a fermenter connected to the low-pressure circulating tank via an ammonia supply pipeline. At least two ammonia supply pipelines are provided, and each pipeline is equipped with a shut-off valve to control the on / off state of the ammonia supply pipeline.
[0021] The ammonia refrigeration system provided in this application embodiment connects a level gauge to a controller. The level gauge can monitor the changes in the liquid level in the ammonia storage tank and the low-pressure circulation tank. When the liquid level in the ammonia storage tank and the low-pressure circulation tank exceeds the set value of the level gauge, it can transmit a signal to the controller. The controller can then control the opening and closing of the conveying pipeline between the ammonia storage tank and the low-pressure circulation tank, thereby regulating and controlling the liquid level in the ammonia storage tank and the low-pressure circulation tank. This achieves automated control without the need for manual adjustment by personnel, which not only improves the accuracy of ammonia liquid control but also enhances the safety of system operation. Attached Figure Description
[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0023] Figure 1 This is a schematic diagram of the ammonia refrigeration system provided in this application.
[0024] Explanation of reference numerals in the attached figures:
[0025] 100 - Ammonia production equipment; 110 - Ammonia storage tank; 120 - Low-pressure circulating tank; 130 - Refrigeration compressor; 140 - Delivery pipeline;
[0026] 200 - Emergency response equipment; 210 - First alarm device; 220 - Ammonia gas sensor;
[0027] 300 - Double-seat safety valve; 400 - Ammonia supply pipeline; 500 - Shut-off valve; 600 - Fermentation tank; 700 - Regulating valve; 800 - Ammonia storage workshop; 900 - Refrigeration workshop.
[0028] To facilitate understanding of the embodiments of this application, the spline curves and arrows used in the reference numerals in the accompanying drawings are explained below: the components indicated by spline curves without arrows can be solid components, that is, components with solid structures; the components indicated by spline curves with arrows can be virtual components, that is, components without solid structures; in some cases, the components indicated by spline curves with arrows can also be assemblies with solid structures or virtual structures.
[0029] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0030] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.
[0031] The terms "first," "second," "third," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.
[0032] Secondly, it should be noted that in the description of this application, the terms "inner", "outer", "first direction", "second direction", etc., which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.
[0033] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0034] As shown in the background section, in related technologies, ammonia refrigeration systems generally include an ammonia storage tank, an ammonia pump, a low-pressure circulating tank, a refrigeration unit, and an ammonia leak alarm. The ammonia pump is used to transport liquid ammonia from the storage tank to the low-pressure circulating tank and then to the fermentation tank. The liquid ammonia absorbs heat and vaporizes, which takes away the heat from the liquid in the fermentation tank. As a result, the ammonia is transported to the low-pressure circulating tank in a two-phase gas-liquid state. After gas-liquid separation, the gaseous ammonia is transported to the refrigeration unit for compression and condensation to form liquid ammonia, which is then transported back to the storage tank to form a cycle.
[0035] However, in ammonia refrigeration systems, the liquid level of ammonia storage tanks and low-pressure circulating tanks is generally read using level gauges. This requires refrigeration workers to manually open and close the liquid supply valves based on the level gauge readings, which can easily lead to large errors and pose safety hazards.
[0036] To address the aforementioned technical problems, this application provides an ammonia refrigeration system, comprising: an ammonia production device and an automatic control component. The ammonia production device includes an ammonia storage tank and a low-pressure circulation tank. The ammonia storage tank is located within an ammonia storage workshop, and the low-pressure circulation tank is located within a refrigeration workshop. The outlet of the ammonia storage tank is connected to the low-pressure circulation tank via a conveying pipeline. The automatic control component includes a controller and at least two level gauges. Both level gauges are signal-connected to the controller and are respectively located in the ammonia storage tank and the low-pressure circulation tank. The controller controls the opening and closing of the conveying pipeline between the ammonia storage tank and the low-pressure circulation tank based on the monitoring information from the level gauges. When the liquid level in the ammonia storage tank and the low-pressure circulation tank exceeds the set value of the level gauge, a signal is transmitted to the controller. The controller then controls the opening and closing of the conveying pipeline between the ammonia storage tank and the low-pressure circulation tank, thereby regulating and controlling the liquid level in the ammonia storage tank and the low-pressure circulation tank. This achieves automated control, eliminating the need for manual adjustment by personnel, thus improving both the accuracy of ammonia liquid control and the safety of system operation.
[0037] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.
[0038] This application provides an ammonia refrigeration system, referring to... Figure 1 As shown, it includes: an ammonia production equipment 100, which includes an ammonia storage tank 110 and a low-pressure circulation tank 120. The ammonia storage tank 110 is installed in an ammonia storage workshop 800, and the low-pressure circulation tank 120 is installed in a refrigeration workshop 900. The outlet of the ammonia storage tank 110 is connected to the low-pressure circulation tank 120 through a conveying pipeline 140.
[0039] An automatic control component includes a controller and at least two level gauges, both of which are signal-connected to the controller. The at least two level gauges are respectively installed in the ammonia storage tank 110 and the low-pressure circulation tank 120. The controller is used to control the opening and closing of the conveying pipeline 140 between the ammonia storage tank 110 and the low-pressure circulation tank 120 based on the monitoring information of the level gauges.
[0040] Understandably, in combination Figure 1 As shown, the ammonia storage tank 110 is installed in the ammonia storage workshop 800. The ammonia storage tank 110 stores liquid ammonia. The liquid ammonia is transferred to the low-pressure circulation tank 120 located in the refrigeration workshop 900 via the conveying pipeline 140. Then, the liquid ammonia is transferred to the fermentation tank 600 (described below) through the low-pressure circulation tank 120. The liquid ammonia absorbs heat and vaporizes, which will take away the heat of the wine in the fermentation tank 600. Then, the ammonia is transferred to the low-pressure circulation tank 120 in a gas-liquid two-phase state. After gas-liquid separation, the gaseous ammonia is transferred to the refrigeration compressor 130 (described below) for compression and condensation to form liquid ammonia, which is then transferred to the ammonia storage tank 110 to form a cycle.
[0041] The volume of ammonia liquid supplied to the low-pressure circulation tank 120 needs to be controlled. Therefore, level gauges are installed on the ammonia storage tank 110 and the low-pressure circulation tank 120, and the maximum upper limit and minimum lower limit of the liquid level are calculated and preset in advance. The level gauges monitor whether the volume of ammonia liquid in the ammonia storage tank 110 and the low-pressure circulation tank 120 exceeds the maximum upper limit and feed the feedback to the controller. The controller uses the volume of ammonia liquid in the ammonia storage tank 110 and the low-pressure circulation tank 120 to control whether to continue supplying liquid to the low-pressure circulation tank 120.
[0042] Specifically, in combination Figure 1 As shown, by connecting the level gauge to the controller signal, the level gauge can monitor the changes in the liquid level in the ammonia storage tank 110 and the low-pressure circulation tank 120. When the liquid level in the ammonia storage tank 110 and the low-pressure circulation tank 120 exceeds the set value of the level gauge, it can transmit a signal to the controller. The controller can then control the opening and closing of the conveying pipeline 140 between the ammonia storage tank 110 and the low-pressure circulation tank 120, thereby regulating and controlling the liquid level in the ammonia storage tank 110 and the low-pressure circulation tank 120, realizing automated control without the need for manual adjustment by personnel. This not only improves the accuracy of ammonia liquid control but also enhances the safety of system operation.
[0043] In one possible implementation, such as Figure 1 As shown, the automatic control component also includes a regulating valve 700, which is installed on the conveying pipeline 140. The regulating valve 700 is connected to the signal output terminal of the controller. The controller is used to control the opening and closing of the regulating valve 700 according to the monitoring information of the level gauge, so as to control the on / off of the conveying pipeline 140 between the ammonia storage tank 110 and the low-pressure circulation tank 120.
[0044] Specifically, such as Figure 1 As shown, by installing a regulating valve 700 on the conveying pipeline 140, and connecting the regulating valve 700 to the signal output terminal of the controller, when the liquid level in the ammonia storage tank 110 is lower than the preset lower limit, the controller controls the regulating valve 700 to open and supply liquid to the low-pressure circulation tank 120; when the liquid level in the ammonia storage tank 110 is higher than the preset upper limit, the controller controls the regulating valve 700 to close and stop supplying liquid to the low-pressure circulation tank 120, ensuring that the liquid level in the low-pressure circulation tank 120 is controlled within the required range.
[0045] In one possible implementation, the level gauge is a glass plate level gauge, the regulating valve 700 is a solenoid valve, and the controller is a PID controller.
[0046] Of course, the level gauge can also be a remote-controlled level gauge. There are no specific restrictions, as long as it can monitor the changes in the liquid level in the ammonia storage tank 110 and the low-pressure circulation tank 120 and transmit the signal to the controller, which can then control whether to supply liquid.
[0047] In one possible implementation, combining Figure 1 As shown, the ammonia production equipment 100 also includes a refrigeration unit. The inlet of the refrigeration unit is connected to the outlet of the low-pressure circulation tank 120, and the outlet of the refrigeration unit is connected to the inlet of the ammonia storage tank 110. The refrigeration unit includes multiple refrigeration compressors 130. The multiple refrigeration compressors 130 are connected to the outside through a pressure relief pipe. A double-seat safety valve 300 is installed at the end of the pressure relief pipe.
[0048] Specifically, such as Figure 1 As shown, by installing multiple refrigeration compressors 130 in the refrigeration workshop 900, the inlet of each refrigeration compressor 130 is connected to the outlet of the low-pressure circulation tank 120, and the outlet of each refrigeration compressor 130 is connected to the inlet of the ammonia storage tank 110, so that the ammonia, which absorbs the heat of the wine in the fermentation tank 600 (described below) and becomes a gas-liquid two-phase state, is separated into gas and liquid by the low-pressure circulation tank 120. The gaseous ammonia can be transported to the refrigeration compressor 130 through the outlet of the low-pressure circulation tank 120, where it is compressed and condensed to form liquid ammonia, which is then transported back to the ammonia storage tank 110 for recycling.
[0049] By installing a double-seat safety valve 300 at the end of the pressure relief pipe, when it is necessary to verify the normal operation of the safety valves, one safety valve can be closed first for verification, while the other remains open without affecting normal function. Furthermore, the double-seat safety valve 300 enhances safety; if one safety valve malfunctions, the other can still be used normally, allowing for timely handling of the faulty valve and preventing downtime.
[0050] In one possible implementation, such as Figure 1As shown, the ammonia refrigeration system also includes an emergency response device 200, which is connected to the ammonia generating equipment 100. The emergency response device 200 is used to monitor whether ammonia is leaking in the ammonia generating equipment 100 and to trigger an alarm. The ammonia generating equipment 100 is electrically connected to a first power source, and the emergency response device 200 is electrically connected to a second power source. The second power source and the first power source are powered independently.
[0051] Specifically, in combination Figure 1 As shown, by setting up an emergency response device 200 and connecting it to the ammonia production equipment 100, the emergency response device 200 can monitor whether there is a leak in the ammonia production equipment 100 or the refrigeration workshop 900, so as to promptly remind the staff to carry out emergency response and improve system safety.
[0052] By connecting the ammonia generator 100 to the first power source and the emergency response equipment 200 to the second power source, the second power source and the first power source are powered independently. This allows the first power source to be cut off in time when an ammonia leak occurs, preventing secondary leaks. At the same time, there is no need to cut off the second power source, meaning the emergency response equipment 200 can still operate, continuously alerting staff and providing updates on the ammonia leak, thus preventing some staff from being unaware of the specific situation.
[0053] Furthermore, the second power source includes an external power source and a built-in battery, which is configured to supply power to the emergency response device 200 when the external power source is unavailable.
[0054] Understandably, in some unavoidable special circumstances, such as the simultaneous failure of the second power supply due to external influences, the built-in battery can be used to power the emergency handling equipment 200, thus avoiding a direct shutdown.
[0055] Furthermore, in the event of an ammonia leak, an automatic switch can be activated to automatically shut down the ammonia generator 100. Alternatively, in other embodiments, a manual start / stop switch can be installed to prevent further leakage if the ammonia generator 100 malfunctions and the automatic switch fails to close.
[0056] In one possible implementation, such as Figure 1 As shown, the emergency response equipment 200 includes a first alarm 210 and multiple ammonia sensors 220. The signal output terminal of each ammonia sensor 220 is connected to the first alarm 210, and the multiple ammonia sensors 220 are set in different locations within the refrigeration workshop 900.
[0057] The ammonia sensor 220 can detect ammonia concentrations in the range of 0 ppm to 10,000 ppm.
[0058] The first alarm device 210 includes a first-level alarm response, a second-level alarm response, and a third-level alarm response.
[0059] The threshold for triggering a Level 1 alarm response is a detected ammonia concentration greater than or equal to 25 ppm and less than 100 ppm.
[0060] The threshold for triggering a level 2 alarm response is a detected ammonia concentration greater than or equal to 100 ppm and less than 10,000 ppm.
[0061] The threshold for triggering a Level 3 alarm response is a detected ammonia concentration of 10,000 ppm.
[0062] Specifically, in combination Figure 1 As shown, by installing multiple ammonia sensors 220 in the refrigeration workshop 900 and placing the multiple ammonia sensors 220 at different locations in the refrigeration workshop 900 at intervals, it is possible to monitor whether there is an ammonia leak in the refrigeration workshop 900 in all directions.
[0063] By connecting the signal output terminals of each ammonia sensor 220 to a data central processor, and connecting the signal output terminals of the data central processor to the first alarm 210, when the ammonia sensor 220 detects an ammonia leak, it can promptly transmit the signal data to the data central processor for analysis, thereby controlling the first alarm 210 to issue an alarm, so as to remind the staff to take emergency response measures as soon as possible and improve system safety.
[0064] By setting up a first alarm 210 with first-level, second-level, and third-level alarm responses, and setting up an ammonia sensor 220 with a detection range of ammonia concentration greater than or equal to 0 ppm and less than or equal to 10,000 ppm, the ammonia concentration in the refrigeration workshop 900 is monitored in real time by the ammonia sensor 220. When the ammonia sensor 220 detects ammonia, it transmits the data signal to the data central processor for analysis in real time. When the ammonia concentration obtained by the ammonia sensor 220 is greater than or equal to 25 ppm and less than 100 ppm, the data central processor transmits the signal to the first alarm 210 to issue a first-level alarm response, and the staff then initiate the corresponding level of response measures.
[0065] When the ammonia concentration obtained by the ammonia sensor 220 is greater than or equal to 100ppm and less than 10000ppm, the data central processor transmits a signal to the first alarm 210 to issue a level two alarm response, and the staff will then initiate the corresponding level of handling measures.
[0066] Similarly, when the ammonia sensor 220 detects ammonia, it transmits the data signal to the data central processor in real time for analysis. When the ammonia concentration obtained by the ammonia sensor 220 is equal to 10,000 ppm, that is, the ammonia concentration reaches or exceeds the maximum range monitored by the ammonia sensor 220, the data central processor transmits the signal to the first alarm 210 and issues a level three alarm response. At this time, the staff will start the corresponding level of handling measures.
[0067] It is understandable that the Level 1, Level 2, and Level 3 alarm responses are different, so that staff can initiate corresponding emergency response measures based on the different forms of alarm responses issued by the first alarm device 210, thereby improving emergency response efficiency.
[0068] Furthermore, the emergency response equipment 200 also includes a second alarm, which is connected to the controller signal. The second alarm is used to monitor whether the pressure of the ammonia storage tank 110 and the low-pressure circulation tank 120 exceeds the standard based on the level gauge and to trigger an alarm.
[0069] It is understood that the level gauge can be a pressure level gauge. When the pressure level gauge detects that the pressure in the ammonia storage tank 110 and the low-pressure circulation tank 120 exceeds the set value, it can transmit a signal to the controller. The signal output terminal of the controller is connected to the second alarm. When the controller operates, it closes the regulating valve 700 and feeds back the signal to the second alarm to trigger an overpressure alarm, ensuring the safe operation of the equipment.
[0070] In one possible implementation, both the first alarm 210 and the second alarm are audible and visual alarms.
[0071] Understandably, in the event of an ammonia leak or overpressure in ammonia storage tank 110 and low-pressure circulation tank 120, the audible and visual alarms can quickly trigger high-intensity audible and visual signals to alert personnel to take emergency measures and evacuate staff. Furthermore, both the first alarm 210 and the second alarm can emit dual audible and visual signals, significantly reducing response delays caused by limitations in a single sensory channel, as well as response delays caused by ambient noise or insufficient light.
[0072] Of course, in other embodiments, the first alarm 210 and the second alarm can be paired with a buzzer. In abnormal working conditions (such as ammonia leakage or overpressure), while providing audible and visual alarms, the buzzer can be triggered to emit a high-frequency sound, quickly attracting the attention of staff and prompting an emergency response.
[0073] In one possible implementation, such as Figure 1As shown, it also includes a fermenter 600, which is connected to a low-pressure circulating tank 120 via an ammonia supply pipeline 400. At least two ammonia supply pipelines 400 are provided, and a shut-off valve 500 is provided on the ammonia supply pipeline 400 to control the opening and closing of the ammonia supply pipeline 400.
[0074] Specifically, such as Figure 1 As shown, the wine in the fermentation tank 600 is cooled by a secondary cooling method. The cooling pipe is spirally coiled outside the fermentation tank 600, and its two ends are connected to the ammonia supply pipe 400. The ammonia liquid in the ammonia storage tank 110 is transported to the low-pressure circulation tank 120 by an ammonia pump. The ammonia liquid in the low-pressure circulation tank 120 is transported to the cooling pipe through one of the ammonia supply pipes 400. The ammonia liquid absorbs heat and vaporizes, which will take away the heat of the wine in the fermentation tank 600. Then, the ammonia is in a gas-liquid two-phase state and is transported back to the low-pressure circulation tank 120 through the other ammonia supply pipe 400. After gas-liquid separation, the gaseous ammonia is transported to the refrigeration compressor 130 for compression and condensation to form liquid ammonia, which is then transported back to the ammonia storage tank 110 to form a cycle.
[0075] Finally, it should be noted that other embodiments of this application will readily conceive of by those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and alterations may be made without departing from its scope. The scope of this application is limited only by the appended claims.
Claims
1. An ammonia refrigeration system, characterized by, include: An ammonia production equipment (100) includes an ammonia storage tank (110) and a low-pressure circulation tank (120). The ammonia storage tank (110) is installed in an ammonia storage workshop (800), and the low-pressure circulation tank (120) is installed in a refrigeration workshop (900). The outlet of the ammonia storage tank (110) is connected to the low-pressure circulation tank (120) through a conveying pipeline (140). An automatic control component includes a controller and at least two level gauges, each of which is signal-connected to the controller. The at least two level gauges are respectively installed in the ammonia storage tank (110) and the low-pressure circulation tank (120). The controller is used to control the opening and closing of the conveying pipeline (140) between the ammonia storage tank (110) and the low-pressure circulation tank (120) based on the monitoring information of the level gauges.
2. The ammonia refrigeration system of claim 1, wherein, The automatic control component also includes a regulating valve (700), which is disposed on the conveying pipeline (140). The regulating valve (700) is connected to the signal output terminal of the controller. The controller is used to control the opening and closing of the regulating valve (700) according to the monitoring information of the level gauge, so as to control the on / off of the conveying pipeline (140) between the ammonia storage tank (110) and the low-pressure circulation tank (120).
3. The ammonia refrigeration system of claim 2, wherein, The level gauge is a glass plate level gauge, the regulating valve (700) is a solenoid valve, and the controller is a PID controller.
4. The ammonia refrigeration system of claim 1, wherein, The ammonia production equipment (100) also includes a refrigeration unit. The inlet of the refrigeration unit is connected to the outlet of the low-pressure circulating tank (120), and the outlet of the refrigeration unit is connected to the inlet of the ammonia storage tank (110). The refrigeration unit includes multiple refrigeration compressors (130). The multiple refrigeration compressors (130) are connected to the outside through a pressure relief pipe. A double-seat safety valve (300) is installed at the end of the pressure relief pipe.
5. The ammonia refrigeration system of claim 1, wherein, The ammonia refrigeration system also includes an emergency response device (200), which is connected to the ammonia generating equipment (100). The emergency response device (200) is used to monitor whether ammonia is leaking in the ammonia generating equipment (100) and to trigger an alarm. The ammonia generating equipment (100) is electrically connected to a first power source, and the emergency response device (200) is electrically connected to a second power source. The second power source and the first power source are powered independently.
6. The ammonia refrigeration system of claim 5, wherein, The second power source includes an external power source and a built-in battery, the built-in battery being configured to supply power to the emergency response device (200) when the external power source is unavailable.
7. The ammonia refrigeration system of claim 5, wherein, The emergency response equipment (200) includes a first alarm (210) and multiple ammonia sensors (220). The signal output terminal of each ammonia sensor (220) is connected to the first alarm (210), and the multiple ammonia sensors (220) are set in different locations within the refrigeration workshop (900). The ammonia sensor (220) can detect ammonia concentrations in a range greater than or equal to 0 ppm and less than or equal to 10,000 ppm. The first alarm (210) includes a first alarm response, a second alarm response and a third alarm response; The first alarm response is started when the detected ammonia concentration is greater than or equal to 25 ppm and less than 100 ppm; The second alarm response is started when the detected ammonia concentration is greater than or equal to 100 ppm and less than 10000 ppm; The third alarm response is started when the detected ammonia concentration is equal to 10000 ppm.
8. The ammonia refrigeration system of claim 7, wherein, The emergency treatment device (200) further comprises a second alarm connected with the controller, which is used to monitor whether the pressure of the ammonia storage tank (110) and the low-pressure circulating tank (120) exceeds the standard according to the liquid level meter and alarm.
9. The ammonia refrigeration system of claim 8, wherein, The first alarm (210) and the second alarm are both audible and visual alarms.
10. The ammonia refrigeration system of any of claims 1-9, wherein, Further comprising a fermentation tank (600) connected with the low-pressure circulating tank (120) through an ammonia supply pipeline (400), the ammonia supply pipeline (400) is provided with at least two, and a stop valve (500) is arranged on the ammonia supply pipeline (400) to control the on-off of the ammonia supply pipeline (400).