Condenser and industrial refrigerating system
By installing a separator on top of the condenser and using pressure and temperature sensors to automatically separate non-condensable gases, the problem of reduced refrigeration efficiency and safety hazards caused by the accumulation of non-condensable gases is solved. This achieves automated and safe gas separation and refrigerant recovery, reducing energy consumption and refrigeration costs.
Patent Information
- Application Number
- CN202423206575.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-12-25
AI Technical Summary
In existing industrial refrigeration systems, the accumulation of non-condensable gases leads to reduced refrigeration efficiency, increased energy consumption, and safety hazards. Existing solutions are costly or, if not operated properly, can easily result in refrigerant waste and environmental pollution.
A separator is installed on top of the condenser body. Through real-time monitoring by pressure and temperature sensors, it automatically separates and removes non-condensable gases. Combined with an adaptive regulating valve to control the emission rate, it achieves automatic separation and recovery of non-condensable gases.
It enables the automatic separation and recovery of non-condensable gases, reducing energy consumption, improving refrigeration efficiency, reducing refrigerant waste, and lowering operational risks and costs.
Smart Images
Figure CN223855906U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to industrial refrigeration technical field especially relates to a condenser and industrial refrigeration system. BACKGROUND
[0002] Industrial refrigeration system mainly reaches the purpose of refrigeration through refrigerant thermodynamic cycle, and the refrigerant absorbs the heat of the cooled matter at low temperature, and then shifts to cooling water or air at higher temperature.
[0003] If the evaporation pressure in the refrigeration system is lower than the atmospheric pressure, under the action of pressure difference, the air outside the unit will enter the system, and since the main components of the air are nitrogen and oxygen, the air exists in the system as non-condensable gas; or, the initial filling refrigerant is unqualified and mixed with non-condensable gas, which finally gathers at the top of the condenser and the liquid accumulator, resulting in high exhaust pressure in the refrigeration system, increased power consumption of the compressor and reduced refrigeration efficiency.
[0004] In order to reduce the content of non-condensable gas in the system, there are generally two methods: the first method is that the on-site operator manually discharges the non-condensable gas in the system through the emptying valve at the top of the condenser or the liquid accumulator; the second method is to additionally configure a non-condensable gas separator to separate and discharge the non-condensable gas.
[0005] Because the pressure of the condenser is equal to the exhaust pressure in the refrigeration system, the pressure is high, and a certain proportion of refrigerant is mixed in the discharged non-condensable gas, which will instantaneously reduce the temperature and release the pressure during the discharge from high pressure to atmosphere, and improper operation may cause injury or frostbite to the operator. Moreover, there is a high probability that the discharged non-condensable gas contains refrigerant, which also causes waste of refrigerant and pollution of the environment.
[0006] If a non-condensable gas separator is additionally configured, a heat exchanger needs to be newly made, which is high in cost. UTILITY MODEL CONTENTS
[0007] The utility model discloses a kind of condensers, which is installed at the top of condenser body and made into a whole by non-condensable gas separator, automatically discharge non-condensable gas in the system through non-condensable gas separator at the top of condenser, reduce the energy consumption of freezer unit, improve the refrigeration efficiency of unit.
[0008] The utility model discloses the following technical solutions are used to realize the purpose:
[0009] A condenser, comprising a condenser body, a first pressure transmitter, a first temperature transmitter and a separator, wherein,
[0010] A first pressure transmitter and a first temperature transmitter are arranged at the top and bottom of the condenser body, respectively, the first pressure transmitter is used to detect the real-time pressure at the top of the condenser body, and the first temperature transmitter is used to detect the temperature at the bottom of the condenser body and convert it into a saturation pressure;
[0011] A separator is arranged at the top of the condenser body, the tube side of the separator is connected with a discharge port, the shell side of the separator is connected with an air inlet and an air outlet, and the air inlet and the air outlet are used to input and output refrigerant gas, respectively;
[0012] When the real-time pressure is greater than the saturation pressure by 5%, it is determined that the non-condensable gas in the condenser exceeds the standard, at this time, the refrigerant gas is input into the shell side from the air inlet, after heat exchange with the mixed gas in the tube side, it is output from the air outlet, and the refrigerant gas in the mixed gas is condensed and falls back into the condenser body, and the non-condensable gas is discharged from the discharge port.
[0013] In some embodiments, the air inlet is configured to be connected with a liquid accumulator, and the liquid accumulator is used to provide refrigerant liquid.
[0014] In some embodiments, a first regulating valve is arranged between the air inlet and the liquid accumulator, and is used to convert the refrigerant liquid into refrigerant gas and control the input rate of the refrigerant gas input into the shell side.
[0015] In some embodiments, the air outlet is configured to be connected with a buffer tank or a compressor.
[0016] In some embodiments, a second pressure transmitter and a second temperature transmitter are arranged between the air outlet and the buffer tank or the compressor.
[0017] The opening degree of the first regulating valve is configured to be jointly regulated by the second pressure transmitter and the second temperature transmitter.
[0018] In some embodiments, the discharge port is configured to be connected with a flare or connected with the atmosphere.
[0019] In some embodiments, a second regulating valve is arranged on the discharge side of the discharge port, and is used to control the discharge rate of the non-condensable gas.
[0020] In some embodiments, the opening degree of the second regulating valve is configured to be jointly regulated by the first pressure transmitter and the first temperature transmitter.
[0021] In some embodiments, when the real-time pressure is greater than the saturation pressure within 1%, it is determined that the discharge of the non-condensable gas in the condenser is completed, at this time, the discharge port and the air inlet are closed.
[0022] The utility model also provides an industrial refrigeration system, including the condenser of above.
[0023] Compared with the prior art, the utility model has at least the following beneficial effects:
[0024] 1. By real -time pressure and saturation pressure contrast, can judge the non -condensable gas in condenser whether exceed standard automatically.
[0025] 2. Can automatically remove the non -condensable gas in the system and recycle refrigerant, reduce the energy consumption of freezer unit, improve the refrigeration efficiency of unit, reduce the personnel operation of scene, improve security.
[0026] 3. Make the separator and condenser body into a whole, reduce the manufacturing cost and installation work.
[0027] 4. Can according to the content of non -condensable gas, automatically control the discharge rate, with self -adaptation adjustment function. BRIEF DESCRIPTION OF DRAWINGS
[0028] Figure 1 It is the structure schematic diagram of the condenser of the utility model embodiment.
[0029] In the drawing: 1, condenser body;2, first pressure transmitter;3, first temperature transmitter;4, separator;41, discharge port;42, air inlet;43, air outlet;5, first regulating valve;6, second pressure transmitter;7, second temperature transmitter;8, second regulating valve. DETAILED DESCRIPTION
[0030] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations, however, can be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and fully convey the inventive aspects of example implementations to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and thus description of the same will not be repeated.
[0031] The words expressing position and direction described in the utility model are all illustrated by taking the drawings as examples, but can also be changed according to needs, and the changes made are all included in the protection scope of the utility model.
[0032] Referring to Figure 1 As shown in the figure, the utility model discloses a condenser, including condenser body 1, first pressure transmitter 2, first temperature transmitter 3 and separator 4.
[0033] The first pressure transmitter 2 is installed on the top of the condenser body 1 to detect the real-time pressure of the top of the condenser body 1. The first temperature transmitter 3 is installed on the bottom of the condenser body 1 to detect the temperature of the bottom of the condenser body 1, and the saturation temperature is converted into saturation pressure in the control system according to the refrigerant used in the condenser (prior art).
[0034] The separator 4 has a shell-and-tube structure, which is stable and has a mature manufacturing process. When installed, the separator 4 is fixed vertically on the top of the condenser body 1 to form an integral whole, and the tube passage of the separator 4 is communicated with the condenser body 1 to ensure that the mixed gas of the refrigerant and the non-condensable gas in the condenser body 1 can enter the separator 4.
[0035] In the separator 4, the shell passage is connected with an inlet 42 and an outlet 42 for inputting and outputting refrigeration gas, respectively, and the tube passage is connected with a discharge port 41 for discharging the separated non-condensable gas. For example, the inlet 42 is configured to be connected with a liquid accumulator for providing refrigeration liquid, and a first regulating valve 5 (throttling effect) is arranged between the inlet 42 and the liquid accumulator to convert the refrigeration liquid into refrigeration gas. After entering the shell passage, the refrigeration gas can exchange heat with the mixed gas in the tube passage to separate the refrigeration gas from the non-condensable gas in the mixed gas. The outlet 42 is configured to be connected with a buffer tank or a compressor for absorbing the refrigeration gas after heat absorption. The discharge port 41 is configured to be connected with a flare or the atmosphere, and the separated non-condensable gas can be directly discharged to the flare or the atmosphere. A second regulating valve 8 is arranged on the discharge side of the discharge port 41 to control the discharge rate of the non-condensable gas.
[0036] It should be noted that the refrigeration gas input into the shell passage and the refrigerant in the condenser body 1 can be the same substance or different substances. Preferably, the refrigeration liquid is a medium-temperature high-pressure refrigerant liquid, and the refrigeration gas is a low-temperature low-pressure refrigerant gas, which is beneficial to the circulation of the refrigeration system.
[0037] In this application, when the real-time pressure is greater than 5% of the saturation pressure, it is considered that the non-condensable gas in the condenser exceeds the standard, and the non-condensable gas discharge operation needs to be performed. At this time, the refrigeration gas is input into the shell passage from the inlet 42, and after heat exchange with the mixed gas in the tube passage, it is output from the outlet 42. The refrigeration gas in the mixed gas is condensed into liquid and falls back into the condenser body 1 under the action of gravity. The non-condensable gas cannot be condensed and can only be discharged to the flare or the atmosphere through the discharge port 41 to complete the automatic discharge. When the real-time pressure is greater than the saturation pressure within 1%, it is determined that the non-condensable gas discharge in the condenser is completed. At this time, the first regulating valve 5 and the second regulating valve 8 are closed, so that the discharge port 41 no longer discharges the non-condensable gas, and the inlet 42 no longer inputs the refrigeration gas.
[0038] During the discharging process, the discharging rate of the non-condensable gas is controlled by the second regulating valve 8, and the opening degree of the second regulating valve 8 is jointly regulated by the first pressure transmitter 2 and the first temperature transmitter 3, so as to realize the self-adaptive regulation function.
[0039] In conclusion, the condenser can realize the automatic discharging of the non-condensable gas and reduce the waste of the refrigerant.
[0040] In some embodiments, the gas outlet 42 is provided with a second pressure transmitter 6 and a second temperature transmitter 7 between the buffer tank or the compressor, and the opening degree of the first regulating valve 5 is jointly regulated by the calculation of the superheat degree, so as to control the input rate of the refrigerant gas input into the shell side and realize the self-adaptive regulation function.
[0041] The utility model discloses still a kind of industrial refrigeration system, including the condenser described above, so that system can automatically remove non-condensable gas in system, reduce the energy consumption of freezer unit, improve the refrigeration efficiency of unit.
[0042] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary, and cannot be understood as the limitation of the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model without departing from the principles and purposes of the utility model, all these changes should belong to the protection scope of the utility model claim.
Claims
1. A condenser characterized by, The condenser comprises: a condenser body (1); a first pressure transmitter (2) and a first temperature transmitter (3) arranged at the top and bottom of the condenser body (1) respectively, the first pressure transmitter (2) being used to detect the real-time pressure at the top of the condenser body (1), and the first temperature transmitter (3) being used to detect the temperature at the bottom of the condenser body (1) and convert it into a saturation pressure; a separator (4) arranged at the top of the condenser body (1), the tube side of the separator (4) being connected with a discharge port (41), and the shell side of the separator (4) being connected with an air inlet port (42) and an air outlet port (43), the air inlet port (42) and the air outlet port (43) being used for inputting and outputting refrigerant gas respectively; when the real-time pressure is greater than the saturation pressure by 5%, it is determined that the non-condensable gas in the condenser is excessive, at this time, the refrigerant gas is inputted into the shell side from the air inlet port (42), and after heat exchange with the mixed gas in the tube side, it is outputted from the air outlet port (43), and the refrigerant gas in the mixed gas is condensed and falls back into the condenser body (1), and the non-condensable gas is discharged from the discharge port (41).
2. The condenser of claim 1, wherein The air inlet port (42) is configured to be connected with a liquid accumulator, and the liquid accumulator is used to provide refrigerant liquid.
3. The condenser of claim 2, wherein, A first regulating valve (5) is arranged between the air inlet port (42) and the liquid accumulator, and is used to convert the refrigerant liquid into refrigerant gas and control the input rate of the refrigerant gas inputted into the shell side.
4. The condenser of claim 3, wherein The air outlet port (43) is configured to be connected with a buffer tank or a compressor.
5. The condenser of claim 4, wherein, A second pressure transmitter (6) and a second temperature transmitter (7) are arranged between the air outlet port (43) and the buffer tank or the compressor. The opening degree of the first regulating valve (5) is configured to be jointly controlled by the second pressure transmitter (6) and the second temperature transmitter (7).
6. The condenser of claim 1, wherein The discharge port (41) is configured to be connected with a flare or connected with the atmosphere.
7. The condenser of claim 6, wherein A second regulating valve (8) is arranged on the discharge side of the discharge port (41), and is used to control the discharge rate of the non-condensable gas.
8. The condenser of claim 7, wherein, The opening degree of the second regulating valve (8) is configured to be jointly controlled by the first pressure transmitter (2) and the first temperature transmitter (3).
9. The condenser of claim 1, wherein When the real-time pressure is greater than the saturation pressure by within 1%, it is determined that the discharge of the non-condensable gas in the condenser is completed, at this time, the discharge port (41) and the air inlet port (42) are closed.
10. An industrial refrigeration system characterized in that, The condenser as claimed in any one of claims 1-9. The condenser as claimed in any one of claims 1-9.