CN109595140B - Horizontal cooler for large-scale refrigeration compressor - Google Patents
Horizontal cooler for large-scale refrigeration compressor Download PDFInfo
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- CN109595140B CN109595140B CN201811625476.9A CN201811625476A CN109595140B CN 109595140 B CN109595140 B CN 109595140B CN 201811625476 A CN201811625476 A CN 201811625476A CN 109595140 B CN109595140 B CN 109595140B
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- baffle
- filter screen
- cavity
- lower cavity
- gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
- F04B39/062—Cooling by injecting a liquid in the gas to be compressed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/16—Filtration; Moisture separation
Abstract
The invention relates to the field of refrigerant compressor testing devices, in particular to a horizontal cooler for a large-scale refrigeration compressor. The cooler comprises a plurality of horizontal cavities which are arranged up and down, every two adjacent cavities are communicated with each other, and auxiliary mechanisms for mixing gas and liquid are correspondingly arranged in the cavities. The invention has the advantages that: the cooler can reduce the size requirement of a space plane through the up-and-down connection between the horizontal cavities; the cooler is divided into a plurality of cavities, the cavities are different in size and structure, the processing is convenient, the requirements for space length and width can be reduced, the movement length of gas and liquid in the cooler can be improved, and the cooling effect of liquid on gas is optimized.
Description
Technical Field
The invention relates to the field of refrigerant compressor testing devices, in particular to a horizontal cooler for a large-scale refrigeration compressor.
Background
In recent years, the construction of compressor test devices of refrigerant compressor manufacturers is increasing, and according to the requirements of national standards, the test devices are generally tested by combining two test methods. The main test of the test device is generally a refrigerant gas flow meter method, and the auxiliary test adopts a refrigerant gas cooling method. For energy savings, a gas cooler is one of the most important devices in this type of test apparatus. It has the main functions as follows: the high-temperature low-pressure gas refrigerant and the low-temperature low-pressure gas-liquid two-phase or liquid refrigerant are fully mixed and heat exchange is carried out. Most of the refrigerant discharged by the compressor is throttled by the gas throttle valve to become a high-temperature low-pressure gaseous refrigerant; and a small part of the condensed liquid is condensed in a condenser and is throttled by a liquid throttle valve to form a low-temperature low-pressure vapor-liquid two-phase state.
The coolers in the prior art are all vertical, so that the requirement on the height of a field is high, in order to fully mix gas and liquid, the cavities of the coolers are large in size, the processing difficulty is high, the refrigerant filling amount is large, and in order to solve the problem, a new cooler is urgently needed.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a horizontal cooler for a large-scale refrigeration compressor.
In order to achieve the purpose, the invention adopts the following technical scheme:
the horizontal cooler for large refrigerating compressor includes several horizontal cavities communicated with each other, and several gas-liquid mixing auxiliary mechanisms set inside the cavities.
Optimized, the cavity is two, is last cavity and lower cavity respectively, be provided with first complementary unit in the cavity down, first complementary unit includes a plurality ofly and the baffle group of cavity inner wall combination guide inside gas-liquid mixture flow direction down, set up at the ascending a plurality of gas-liquid mixture flow direction by the filterable filter assembly of dispersion.
Preferably, a feed inlet is formed in one end of the lower cavity, and an air outlet is formed in the upper cavity.
Optimized, first complementary unit includes first filtering component and second filtering component, and baffle group includes first baffle, second baffle, first baffle sets up from top to bottom with first filtering component, will descend the cavity to fall into two cavitys about, and second baffle and first filtering component support second filtering component, and second baffle and first filtering component are located second filtering component's length direction's both ends.
Preferably, the first filter component comprises a first filter screen, a left pressing plate and a right pressing plate, the left pressing plate and the right pressing plate are used for fixing the outer edge of the first filter screen, the second filter component comprises a second filter screen, an upper pressing plate and a lower pressing plate, the upper pressing plate and the lower pressing plate are used for fixing the outer edge of the second filter screen, and the first filter screen and the second filter screen are plates formed by pressing stainless steel wire clusters.
Preferably, the lower cavity is composed of head sealing sections at two ends and a middle straight cylinder section, the feed inlet is arranged on the head sealing section at the right end, and the second baffle is fixed on the head sealing section at the right end and close to the left end.
Preferably, the first baffle is inclined, and the surface of the first baffle facing the feed inlet and the surface of the first separation unit facing the feed inlet form an obtuse angle.
Preferably, a plurality of air outlet connecting pipes are arranged on the inner side wall of the outlet of the gas-liquid mixture flowing direction in the lower cavity, a plurality of air inlet connecting pipes which correspond to the air outlet connecting pipes one to one are arranged on the upper cavity, and the corresponding air outlet connecting pipes are connected with the air inlet connecting pipes in a sealing manner.
Preferably, a plurality of blocking parts for increasing gas operation routes are arranged in the upper cavity, each blocking part comprises a third baffle and a baffle plate, the bottom of the third baffle is vertically fixed on the side close to the corresponding gas inlet connecting pipe outlet, one end of each baffle plate is fixed at the upper end of the corresponding third baffle, and the surface facing the gas inlet connecting pipe and the surface facing the gas inlet of the third baffle form an obtuse angle.
Preferably, a balance pipe for balancing the pressure between the upper cavity and the lower cavity is further arranged between the upper cavity and the lower cavity.
The invention has the advantages that:
(1) the cooler can reduce the size requirement of a space plane through the up-and-down connection between the horizontal cavities; the cooler is divided into a plurality of cavities, the cavities are different in size and structure, the processing is convenient, the requirements for space length and width can be reduced, the movement length of gas and liquid in the cooler can be improved, and the cooling effect of liquid on gas is optimized.
(2) The first separation unit, the second separation unit and the first baffle are arranged in the lower cavity to form three parts, wherein the first filter screen and the second filter screen can effectively scatter gas and liquid drops in the airflow twice, and decompose larger liquid drops into a plurality of small liquid drops, so that the heat transfer area of the gas and the liquid refrigerant is increased; meanwhile, oil drops mixed in the air flow are filtered twice.
(3) First filter screen and second filter screen vertical setting increase the operation route in twice mixing process for mix more evenly, first filter screen and second filter screen shape have also increased the mixed effect.
(4) The second baffle and the first auxiliary mechanism support two ends of the second auxiliary mechanism, so that the whole lower cavity can be conveniently machined.
(5) The blocking part can be arranged to increase the gas flow path in the lower cavity.
(6) Because gas-liquid flow is great, there is two cavity pressure inequality, and the setting of balance tube can balance the pressure of two cavities.
(7) The first baffle and the baffle are inclined, so that the direction of air flow is conveniently changed, and the heat exchange time is prolonged.
(8) The arrangement of the air outlet connecting pipe and the air inlet connecting pipe facilitates the connection between the two cavities.
Drawings
FIG. 1 is a schematic view of the external form of a horizontal gas cooler in example 1 comprising an upper chamber and a lower chamber.
FIG. 2 is a schematic view of the internal structure of the horizontal gas cooler in example 1.
Fig. 3 is a sectional view B-B of fig. 2.
Fig. 4 is an enlarged view of a portion B in fig. 2 and a portion a in fig. 3.
FIG. 5 is a schematic external view of a three-chamber horizontal gas cooler according to example 2.
The notations in the figures have the following meanings:
1-upper cavity 2/16-air inlet connecting pipe 3/15-air outlet connecting pipe 4-lower cavity
5-second baffle 6-sewage discharge pipe 7-first balance pipe 8-second balance pipe
9-left press plate 10-first filter screen 11-right press plate 12-liquid level meter
13-feed inlet 14-first baffle 17-third baffle 18-baffle
19-air outlet 20-upper press plate 21-second filter screen 22-lower press plate
Detailed Description
Example 1
As shown in fig. 1 to 4, a horizontal cooler for a large-scale refrigeration compressor comprises a plurality of horizontal cavities which are arranged up and down, every two adjacent cavities are communicated with each other, and auxiliary mechanisms for mixing gas and liquid are correspondingly arranged in the cavities.
In this embodiment, the number of the cavities is two, which are the upper cavity 1 and the lower cavity 4, a first auxiliary mechanism is arranged in the lower cavity 4, and the first auxiliary mechanism includes a plurality of baffle groups combined with the inner wall of the lower cavity 4 to guide the flow direction of the internal gas-liquid mixture, and a filter assembly arranged on the flow direction of the gas-liquid mixture and used for dispersing and filtering the gas-liquid mixture. The two cavities are arranged up and down, so that the optimal arrangement is realized under the requirement of reducing the cost.
A feed inlet 13 is formed in one end of the lower cavity 4, and specifically, the feed inlet 13 is formed in the head sealing section at the right end. An air outlet 19 is arranged on the upper cavity 1. The upper cavity 1 and the lower cavity 4 are both composed of head sealing sections at two end parts and a straight cylinder section in the middle, specifically, the feed inlet 13 is arranged at the right end of the lower cavity 4, and the air outlet 19 is arranged on the side surface of the upper cavity 1 in the length direction.
The first auxiliary mechanism comprises a first filtering component and a second filtering component, the baffle group comprises a first baffle 14 and a second baffle 5, the first baffle 14 and the first filtering component are arranged up and down, the lower cavity 4 is divided into a left cavity and a right cavity, in the embodiment, the first baffle 14 is inclined, and the surface of the first baffle 14 facing the feed port 13 and the surface of the first separation unit facing the feed port 13 form an obtuse angle. The second baffle 5 and the first filtering component support the second filtering component, and the second baffle 5 and the first filtering component are located at two ends of the second filtering component in the length direction. And the second baffle 5 is fixed on the straight cylinder section and is close to the head sealing section at the left end. The first baffle plate 14 and the second baffle plate 5 are both half round sections and are all welded with the inner wall of the lower cavity 4.
First filter component includes first filter screen 10 and is used for fixed first filter screen 10 outward flange's left clamp plate 9 and right clamp plate 11, second filter component includes second filter screen 21 and is used for fixed second filter screen 21 outward flange's top board 20 and holding down plate 22, first filter screen 10 and second filter screen 21 are the plate that stainless steel wire group pressed into. In this embodiment, the thickness of the first filter screen 10 is 50 mm, and the diameter of the stainless steel wire is 0.15 mm, which can effectively reduce the air flow speed and the air flow direction, so that the refrigerant droplets become smaller, and the droplets and oil droplets are primarily separated from the air flow. The thickness of the second filter screen 21 is 150 mm, the diameter of the stainless steel wire is 0.25 mm, small oil drops carried in mixed gas and liquid can be filtered, the oil content of outlet gas is low, more importantly, the liquid drops are decelerated and scattered at the same time, and the heat exchange time of the liquid drops and the gas is prolonged. Wherein, the left pressing plate 9 and the right pressing plate 11 are both in a strip shape, and the upper pressing plate 20 and the lower pressing plate 22 are both in a coarse grid frame shape. Because of the presence of the first and second baffles, the airflow can only pass through the first and second filters 10 and 21 in sequence. The shape and the material of the filter screen can effectively filter oil drops in the air flow, adsorb impurities in the air and ensure the cleanliness of the air.
The gas-liquid mixture flows to and is provided with a plurality of takeover of giving vent to anger on the inside wall at exit in cavity 4 down, it is provided with a plurality of takeover 2/16 of admitting air with the takeover one-to-one of giving vent to anger to go up to be provided with on cavity 1, the takeover 3/15 and the takeover 2/16 sealing connection of giving vent to anger that correspond. In this embodiment, two inlet nipples 2/16 and two outlet nipples 3/15 are used. The air inlet connecting pipe 2/16 and the air outlet connecting pipe 3/15 are fixedly connected through flanges, and a filter screen can be clamped between the flanges.
A plurality of blocking parts for increasing gas running routes are arranged in the upper cavity 1, each blocking part comprises a third blocking plate 17 and a baffle plate 18, the bottom of the third blocking plate 17 is vertically fixed on the side edge close to the outlet of the corresponding gas inlet connecting pipe 2/16, one end of the baffle plate 18 is fixed on the upper end part of the third blocking plate 17, and the surface facing the gas inlet connecting pipe 2/16 and the surface of the third blocking plate 17 facing the gas inlet form an obtuse angle. The third baffle 17 and the baffle 18 are fixed in the upper cavity 1 by reinforcing ribs, thereby improving the strength of the blocking part. Because of the arrangement of the third baffle 17 and the baffle 18, the airflow is broken up again, so that the gas and the liquid are fully mixed, and the liquid absorbs the heat of the gas, thereby reducing the temperature of the gas to the maximum extent.
When the air flow from the lower cavity 4 to the upper cavity 1 is relatively large, pressure difference exists between the two cavities, and a balance pipe for balancing the pressure between the upper cavity 1 and the lower cavity 4 is further arranged between the upper cavity 1 and the lower cavity 4. In this embodiment, the balance pipes include a first balance pipe 7 and a second balance pipe 8, and the first balance pipe 7 and the second balance pipe 8 are connected at one end and at the other end to the upper chamber 1 and the lower chamber 4, respectively. The liquid level meter 12 is arranged at the top and the bottom of the lower cavity 4, and a drain pipe is arranged at the bottom.
The working temperature of the invention is-65-100 ℃, the working medium is refrigerant, such as R22 and R134a, during the test, the refrigerant liquid level in the lower cavity 4 is high or low according to the requirement of the suction superheat degree of the compressor, when the requirement of the superheat degree is high, the liquid level is low or even no liquid level, and when the requirement of the superheat degree is low, the liquid level is high. The refrigerant gas-liquid two-phase fluid reaches the bottom of the lower cavity 4 through the feed inlet 13, the first filter screen 10 enables the refrigerant liquid drops to be small, and the liquid drops and the oil drops are primarily separated from the air flow; and the larger bubbles in the air flow are decomposed into a plurality of small bubbles, so that the heat transfer area of the gas and the refrigerant liquid drops is increased, and the purpose of full heat exchange is achieved. The second filter 21 can secondarily break up the air and the liquid drops in the air flow, and simultaneously secondarily filter the oil drops in the air flow. The baffle changes the trend of the gas flow for many times, and increases the contact times of the gas and the liquid drops and the heat exchange area. The gas flow in the upper cylinder body is changed in flow direction by the baffle plates 18 after entering the upper cavity 1 through the 2 baffle plates 18 and the 2 third baffle plates 17, so that the heat exchange time of gas and a small amount of liquid drops in the gas flow is prolonged, and the gas flow and the gas temperature of the refrigerant can be accurately measured after sufficient heat exchange.
Example 2
As shown in fig. 5, in this embodiment, the number of the cavities is three, and the cavities are two upper cavities 1 and one lower cavity 4 which are arranged up and down. The air outlet 19 is arranged on the uppermost upper cavity 1, and air flow enters from the feed inlet 13 in the lower cavity 4 in sequence, then passes through the middle upper cavity 1 and is finally discharged from the air outlet 19 of the uppermost upper cavity 1.
The invention is not to be considered as limited to the specific embodiments shown and described, but is to be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A horizontal cooler for a large-scale refrigeration compressor is characterized by comprising a plurality of horizontal cavities which are arranged up and down, wherein every two adjacent cavities are communicated with each other, and auxiliary mechanisms for mixing gas and liquid are correspondingly arranged in the cavities;
the two cavities are respectively an upper cavity (1) and a lower cavity (4), a first auxiliary mechanism is arranged in the lower cavity (4), and the first auxiliary mechanism comprises a plurality of baffle groups combined with the inner wall of the lower cavity (4) to guide the flow direction of an internal gas-liquid mixture and a plurality of filtering components arranged in the flow direction of the gas-liquid mixture and used for dispersing and filtering the gas-liquid mixture;
a feed inlet (13) is formed in one end part of the lower cavity (4), and an air outlet (19) is formed in the upper cavity (1);
the first auxiliary mechanism comprises a first filtering component and a second filtering component, the baffle group comprises a first baffle (14) and a second baffle (5), the first baffle (14) and the first filtering component are arranged up and down to divide the lower cavity (4) into a left cavity and a right cavity, the second baffle (5) and the first filtering component support the second filtering component, and the second baffle (5) and the first filtering component are positioned at two ends of the second filtering component in the length direction;
the first filter assembly comprises a first filter screen (10), a left pressing plate (9) and a right pressing plate (11) which are used for fixing the outer edge of the first filter screen (10), the second filter assembly comprises a second filter screen (21), an upper pressing plate (20) and a lower pressing plate (22) which are used for fixing the outer edge of the second filter screen (21), and the first filter screen (10) and the second filter screen (21) are plates formed by pressing stainless steel wire balls;
the thickness of the first filter screen (10) is 50 mm, and the diameter of the stainless steel wire is 0.15 mm; the thickness of the second filter screen (21) is 150 mm, and the diameter of the stainless steel wire is 0.25 mm;
the first filter screen (10) is arranged along the axial direction perpendicular to the lower cavity (4), and the length direction of the second filter screen (21) is arranged along the axial direction of the lower cavity (4).
2. The horizontal cooler for the large-scale refrigeration compressor is characterized in that the lower cavity (4) is composed of a head sealing section at two end parts and a straight cylinder section in the middle, the feeding port (13) is arranged on the head sealing section at the right end, and the second baffle is fixed on the head sealing section at the right end of the straight cylinder section and close to the left end.
3. Horizontal cooler for large refrigeration compressors according to claim 1, characterized in that the first baffle (14) is inclined, the face of the first baffle (14) facing the inlet opening (13) making an obtuse angle with the face of the first separation unit facing the inlet opening (13).
4. The horizontal cooler for the large-scale refrigeration compressor according to claim 1, wherein a plurality of air outlet connection pipes are arranged on the inner side wall of the outlet of the air-liquid mixture in the lower cavity (4), a plurality of air inlet connection pipes which are in one-to-one correspondence with the air outlet connection pipes on the lower cavity (4) are arranged on the upper cavity (1), and the corresponding air outlet connection pipes and the air inlet connection pipes are hermetically connected.
5. The horizontal cooler for large-scale refrigerating compressors according to claim 4, characterized in that a plurality of blocking parts for increasing the gas running path are arranged inside the upper chamber (1), each blocking part comprises a third baffle (17) and a baffle plate (18), the bottom of the third baffle (17) is vertically fixed at the side close to the outlet of the corresponding intake adapter, one end of the baffle plate (18) is fixed at the upper end of the third baffle (17), and the surface facing the intake adapter and the surface facing the intake of the third baffle (17) form an obtuse angle.
6. The horizontal cooler for the large-scale refrigerating compressor according to claim 1, characterized in that a balance pipe for balancing the pressure between the upper cavity (1) and the lower cavity (4) is further arranged between the upper cavity (1) and the lower cavity (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811625476.9A CN109595140B (en) | 2018-12-28 | 2018-12-28 | Horizontal cooler for large-scale refrigeration compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811625476.9A CN109595140B (en) | 2018-12-28 | 2018-12-28 | Horizontal cooler for large-scale refrigeration compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109595140A CN109595140A (en) | 2019-04-09 |
| CN109595140B true CN109595140B (en) | 2020-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811625476.9A Active CN109595140B (en) | 2018-12-28 | 2018-12-28 | Horizontal cooler for large-scale refrigeration compressor |
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Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB918120A (en) * | 1961-02-03 | 1963-02-13 | Stal Refrigeration Ab | Device for use in refrigeration installations |
| US6880360B2 (en) * | 2002-10-03 | 2005-04-19 | York International Corporation | Compressor systems for use with smokeless lubricant |
| CN101922446B (en) * | 2010-08-13 | 2012-10-31 | 合肥通用机械研究院 | Gas cooler for positive displacement refrigerant compressor test unit |
| CN101915236B (en) * | 2010-08-26 | 2012-05-23 | 合肥通用机械研究院 | Carbon-dioxide gas compressor test device meeting cooler refrigerant side test requirement |
| CN201969466U (en) * | 2010-12-01 | 2011-09-14 | 中国成达工程有限公司 | Combined type intermediate pressure ammonia absorber |
| CN202348634U (en) * | 2011-12-08 | 2012-07-25 | 上海维尔泰克螺杆机械有限公司 | Test-bed control system for refrigeration compressor |
| CN102966524B (en) * | 2012-10-29 | 2015-04-29 | 合肥通用机械研究院 | Low-suction gas superheat performance testing device for refrigeration compressor |
| CN203550359U (en) * | 2013-10-30 | 2014-04-16 | 浙江汇隆空调设备有限公司 | Oil separator for single-system refrigerating unit |
| CN203848569U (en) * | 2014-05-21 | 2014-09-24 | 温岭市钱江化工机械有限公司 | Horizontal liquid reservoir for refrigerating system |
| CN104596162B (en) * | 2015-01-05 | 2017-02-22 | 麦克维尔空调制冷(武汉)有限公司 | Condenser with built-in oil separator |
| CN204973495U (en) * | 2015-06-24 | 2016-01-20 | 杭州翔盛气体设备有限公司 | Freeze drier |
| CN206037520U (en) * | 2016-09-06 | 2017-03-22 | 北京市红苑制冷设备厂 | Horizontal split type oil content ware |
| CN206160581U (en) * | 2016-10-19 | 2017-05-10 | 庸安进 | Refrigerating system's oil separator |
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2018
- 2018-12-28 CN CN201811625476.9A patent/CN109595140B/en active Active
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