CN110925213A - Oil-cooled compressor with multiple pipelines and control method - Google Patents
Oil-cooled compressor with multiple pipelines and control method Download PDFInfo
- Publication number
- CN110925213A CN110925213A CN201911270024.8A CN201911270024A CN110925213A CN 110925213 A CN110925213 A CN 110925213A CN 201911270024 A CN201911270024 A CN 201911270024A CN 110925213 A CN110925213 A CN 110925213A
- Authority
- CN
- China
- Prior art keywords
- pressure
- oil
- flexible connecting
- control module
- total
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/28—Safety arrangements; Monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/18—Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/86—Detection
Abstract
The invention discloses an oil-cooled compressor with multiple pipelines and a control method, the oil-cooled compressor comprises a body and an oil-cooled mechanism connected to the body, the oil-cooled mechanism comprises at least two pipelines and a flexible connecting assembly for pipeline connection, the pipelines are all provided with control valves, the flexible connecting assembly comprises a flexible connecting ring and a fixing ring sleeved on the flexible connecting ring, at least one clamping groove is respectively arranged in each of two end parts of the flexible connecting ring, an elastic sealing ring is matched in each clamping groove, each fixing ring consists of two spliced fixing half rings, an elastic part is abutted between the fixing half rings, a pressure detection part is arranged in each elastic part, the oil-cooled compressor also comprises a control module for receiving and recording a pressure value of the pressure detection part, and the control module controls the on-off of the control valves.
Description
Technical Field
The invention relates to an oil-cooled compressor with multiple pipelines and a control method.
Background
The compressor mainly provides original power for industrial production, comprises an air compressor, a process compressor, a refrigerant compressor and the like, is applied to the fields of industrial automation, traffic braking, energy chemical engineering, refrigeration and air conditioning and the like, and is indispensable equipment in modern industry. The compressor can produce great heat at the operation in-process, needs heat radiation structure for guaranteeing normal operating, takes screw compressor as an example, and screw compressor has structural style such as forced air cooling, water-cooling, oil cooling.
Because the oil cooling heat dissipation is more even and efficient, adopt the oil cooling heat dissipation mostly under the higher circumstances of operational environment temperature height and power, but because the direct and compressor contact of oil cooling heat radiation structure can transmit vibrations, and can produce great vibrations when the compressor starts and stops, the last connecting line of oil cooling heat radiation structure all can produce great vibrations promptly, make compressor and casing all have great noise, and vibrations can strengthen the oil leak possibility of tube coupling department, can not in time discover behind the oil leak and can not normally work by potential safety hazard and compressor, greatly reduced production efficiency.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an oil-cooled compressor with multiple pipelines and a control method, which can reduce the whole noise and reduce the vibration transmission through flexible connection, and can rapidly switch the pipelines to increase the whole reliability.
The technical scheme includes that the oil cooling compressor with the following structure and multiple pipelines comprises a body and an oil cooling mechanism connected to the body, the oil cooling mechanism comprises at least two pipelines and a flexible connecting assembly used for pipeline connection, control valves are arranged on the pipelines, the flexible connecting assembly comprises a flexible connecting ring and fixing rings sleeved on the flexible connecting ring, at least one clamping groove is formed in each of two end portions of the flexible connecting ring, an elastic sealing ring is matched in each clamping groove, each fixing ring is composed of two spliced fixing half rings, an elastic part is abutted between the fixing half rings, a pressure detection part is arranged in each elastic part, and the oil cooling compressor further comprises a control module used for receiving and recording pressure values of the pressure detection part, and the control module controls the on-off of the control valves.
Preferably, the device further comprises an adjusting component for adjusting the distance between the fixed half rings.
Preferably, the adjusting assembly comprises a stud penetrating through the two fixed half rings and a rotating part in threaded fit with two ends of the stud, and the rotating part is connected with a power part for driving the rotating part to rotate along one direction and a non-return part for preventing reverse rotation.
Preferably, the control module controls the operation of the power part according to the pressure value of the pressure detection part.
After adopting the structure, compared with the prior art, the oil-cooled compressor with multiple pipelines has the following advantages: form a structure that can communicate two pipelines through flexible go-between, sealing ring, and two pipelines can not contradict mutually, can reduce the transmission of most vibrations and reduce the noise, and pass through fixed semi-ring between contradict the elastic component, the elastic component in be equipped with pressure detection spare, realize the detection of flexible go-between, sealed ring shape attitude, the break-make of control module control valve can realize switching under the multitube way alternative use or emergency, increases overall reliability.
The invention also provides a control method of the oil-cooled compressor with multiple pipelines, which comprises the oil-cooled compressor with multiple pipelines,
the pressure detection piece detects pressure at certain time intervals and sends pressure values to the control module;
the control module receives the pressure values on the plurality of flexible connecting assemblies and calculates the pressure values with a preset value to obtain an absolute value of a difference value, and the absolute value is accumulated to obtain the total pressure on the plurality of flexible connecting assemblies;
the control valve corresponding to the pipeline with the minimum total driving pressure of the control module is opened when the machine is started every time;
the control module records the total pressure on the plurality of flexible connecting assemblies during each shutdown and gives an alarm when the total pressure exceeds a preset value.
Compared with the prior art, the control method of the oil-cooled compressor with multiple pipelines has the following advantages that: the pressure between the two fixed semi-rings is fed back through the pressure detection piece, the absolute value of the difference value obtained by calculating the pressure value and the preset value is fed back to the received pressure change, namely, the impact force received in real time is obtained, namely, the impact degree received by the flexible connecting ring, the fixed ring and the flexible folding edge can be accurately reflected through the total pressure, the usable time of the flexible connecting assembly can be fed back, namely, the control valve corresponding to the pipeline with the minimum total driving pressure is selected to be opened, long-time operation is ensured, the total pressure can be recorded when the machine is stopped, the total service life is ensured to be shorter than the preset value, the next machine can normally operate, and the overall reliability is.
The invention also provides a control method of the oil-cooled compressor with multiple pipelines, which comprises the oil-cooled compressor with multiple pipelines,
the pressure detection piece detects pressure at certain time intervals and sends pressure values to the control module;
the control module receives the pressure values on the plurality of flexible connecting assemblies and calculates the pressure values with a preset value to obtain an absolute value of a difference value, and the absolute value is accumulated to obtain the total pressure on the plurality of flexible connecting assemblies;
the control valve corresponding to the pipeline with the minimum total driving pressure of the control module is opened when the machine is started every time;
the control module records the total pressure on the flexible connecting components during shutdown each time, and sends a driving signal to the power part when the total pressure exceeds a preset value, the power part runs a preset stroke, and the total pressure is reset;
the control module records the preset travel of the power part and superposes the preset travel to obtain the total travel, and the total travel reaches the threshold value to send a warning signal and stop the corresponding control valve to be opened.
Compared with the prior art, the control method of the oil-cooled compressor with multiple pipelines has the following advantages that: the pressure between the two fixed semi-rings is fed back by the pressure detection piece, the absolute value of the difference value obtained by calculating the pressure value and the preset value is fed back to the received pressure change, namely the impact force received in real time, namely the impact degree received by the flexible connecting ring, the fixed ring and the flexible folding edge can be accurately reflected by the total pressure, namely the usable time of the flexible connecting assembly can be fed back, namely the control valve corresponding to the pipeline with the minimum driving pressure is selected to be opened, the long-time operation is ensured, the total pressure can be recorded when the machine is stopped, in addition, the impact degree received by the flexible connecting ring, the fixed ring and the flexible folding edge can be accurately reflected by the total pressure, namely the pressure needing to be strengthened is judged after a certain impact is received to ensure the sealing stability, and the distance between the fixed semi-rings is changed by, the accurate clamping can be realized, the sealing can be ensured, the integral sealing time can be greatly prolonged, the accurate long-time stable connection is realized, the integral reliability is increased, the total service life is ensured to be less than the preset value, the normal operation of the next starting can be realized, and the integral reliability is increased.
Drawings
Fig. 1 is a schematic view showing the structure of an oil-cooled compressor having a plurality of pipes according to the present invention.
Fig. 2 is a schematic view of the structure of the piping of the present invention.
FIG. 3 is a first schematic view of a flexible connection assembly of the present invention.
Fig. 4 is a schematic cross-sectional view taken along a-a in fig. 3.
FIG. 5 is a second schematic structural view of a flexible connection assembly of the present invention.
Shown in the figure: 1. a body; 2. an oil cooling mechanism; 21. a pipeline; 22. a flexible connection assembly; 221. a flexible connecting ring; 222. a card slot; 223. a fixing ring; 224. an elastic sealing ring; 23. a control valve; 3. an elastic member; 4. a pressure detecting member; 5. an adjustment assembly; 51. a stud; 52. and a rotating member.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, 2, 3, 4 and 5, the oil-cooled compressor with multiple pipelines of the present invention includes a body 1 and an oil-cooled mechanism 2 connected to the body 1, the oil-cooled mechanism 2 includes at least two pipelines 21 and a flexible connecting assembly 22 for connecting the pipelines 21, the pipelines 21 are respectively provided with a control valve 23, the flexible connecting assembly 22 includes a flexible connecting ring 221 and a fixing ring 223 sleeved on the flexible connecting ring 221, at least one clamping groove 222 is respectively provided inside two end portions of the flexible connecting ring 221, an elastic sealing ring 224 is fitted in the clamping groove 222, the fixing ring 223 is composed of two spliced fixing ring halves, an elastic member 3 is abutted between the fixing ring halves, a pressure detecting member 4 is provided in the elastic member 3, and a control module for receiving and recording a pressure value of the pressure detecting member 4 is further included, control module control valve 23's break-make forms a structure that can communicate two pipelines 21 through flexible go-between 221, sealing ring, and two pipelines 21 can not contradict mutually, can reduce the transmission of most vibrations and reduce the noise, and pass through the stationary half ring between contradict elastic component 3, elastic component 3 in be equipped with pressure detection spare 4, realize the detection of flexible go-between 221, sealing ring state, control module control valve 23's break-make can realize that many pipelines 21 select to use or switch under the emergency, increase overall reliability.
Still including adjusting the adjusting part 5 of distance between the stationary half ring, control module according to the operation of the pressure numerical control power spare of pressure measurement 4, the impact degree that the flexible go-between 221, solid fixed ring 223 and flexible hem received that can be accurate through the pressure total number in addition, receive the impact degree that certain degree was strikeed the back judgement needs to strengthen pressure in order to guarantee sealing stability promptly, and make distance between the stationary half ring change through the power spare operation and satisfy the distance value between the stationary half ring, can realize accurate clamp tightly, can guarantee to seal, and can improve whole seal time greatly, realize accurate long-time stable connection, increase whole reliability.
The adjusting assembly 5 comprises a stud 51 penetrating through the two fixed half rings and a rotating part 52 in threaded fit at two ends of the stud 51, the rotating part 52 is connected with a power part for driving the rotating part 52 to rotate along one direction and a non-return part for preventing reverse rotation, namely, the fixed half rings are extruded through the rotating part 52, the structure is simple and reliable, and the fixed half rings are fixed through the non-return part to avoid slipping and reverse rotation. The power part can be a motor, the motor is fixed in the shell, and power supplies such as the motor can be controlled through a bus.
A control method of an oil-cooled compressor with multiple pipelines comprises the steps of:
the pressure detection part 4 detects pressure at certain time intervals and sends pressure values to the control module;
the control module receives the pressure values on the plurality of flexible connecting assemblies 22 and calculates the pressure values with a preset value to obtain an absolute value of a difference value, and the absolute value is accumulated to obtain the total pressure on the plurality of flexible connecting assemblies 22;
when the machine is started each time, the control valve 23 corresponding to the pipeline 21 with the minimum total driving pressure of the control module is opened;
the control module records the total amount of pressure on the plurality of flexible linkage assemblies 22 at each shutdown and issues an alarm when the total amount of pressure exceeds a preset value.
The pressure between the two fixed semi-rings is fed back through the pressure detection part 4, the absolute value of the difference value obtained by calculating the pressure value and the preset value is fed back to the received pressure change, namely, the impact force received in real time, namely, the impact degree received by the flexible connecting ring 221, the fixed ring 223 and the flexible folding edge can be accurately reflected through the total pressure, namely, the usable time of the flexible connecting assembly 22 can be fed back, namely, the control valve 23 corresponding to the pipeline 21 with the minimum total driving pressure is selected to be opened, so that the long-time operation is ensured, the total pressure can be recorded when the machine is stopped, the total service life is ensured to be shorter than the preset value, the normal operation can be realized when the machine.
The control method of the oil-cooled compressor with multiple pipelines comprises the following steps
The pressure detection part 4 detects pressure at certain time intervals and sends pressure values to the control module;
the control module receives the pressure values on the plurality of flexible connecting assemblies 22 and calculates the pressure values with a preset value to obtain an absolute value of a difference value, and the absolute value is accumulated to obtain the total pressure on the plurality of flexible connecting assemblies 22;
when the machine is started each time, the control valve 23 corresponding to the pipeline 21 with the minimum total driving pressure of the control module is opened;
the control module records the total pressure on the plurality of flexible connecting components 22 during shutdown, and sends a driving signal to the power part when the total pressure exceeds a preset value, the power part runs a preset stroke, and the total pressure is reset;
the control module records the preset travel of the power part and superposes the preset travel to obtain the total travel, and the total travel reaches the threshold value to send a warning signal and stop the corresponding control valve 23 to be opened.
The pressure between the two fixed semi-rings is fed back through the pressure detection part 4, the absolute value of the difference value obtained by calculating the pressure value and the preset value is fed back to the received pressure change, namely the impact force received in real time, namely the impact degree received by the flexible connecting ring 221, the fixed ring 223 and the flexible folding edge can be accurately reflected through the total pressure, namely the usable time of the flexible connecting assembly 22 can be fed back, namely the control valve 23 corresponding to the pipeline 21 with the minimum driving pressure is selected to be opened, the long-time operation is ensured, the total pressure can be recorded during the shutdown, in addition, the impact degree received by the flexible connecting ring 221, the fixed ring 223 and the flexible folding edge can be accurately reflected through the total pressure, namely the pressure needing to be strengthened is judged after a certain degree of impact is received so as to ensure the sealing stability, and the distance between the fixed semi-rings is, the accurate clamping can be realized, the sealing can be ensured, the integral sealing time can be greatly prolonged, the accurate long-time stable connection is realized, the integral reliability is increased, the total service life is ensured to be less than the preset value, the normal operation of the next starting can be realized, and the integral reliability is increased.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (6)
1. The utility model provides an oil-cooled compressor with many pipelines, includes body (1) and connects oil-cooled mechanism (2) on body (1), its characterized in that: the oil cooling mechanism (2) comprises at least two pipelines (21) and a flexible connecting component (22) for connecting the pipelines (21), the pipelines (21) are respectively provided with a control valve (23), the flexible connecting assembly (22) comprises a flexible connecting ring (221) and a fixing ring (223) sleeved on the flexible connecting ring (221), at least one clamping groove (222) is respectively arranged inside two end parts of the flexible connecting ring (221), an elastic sealing ring (224) is matched in the clamping groove (222), the fixing ring (223) consists of two spliced fixing half rings, the fixed semi-rings between contradict elastic component (3), elastic component (3) in be equipped with pressure detection spare (4), still including the control module who receives and record pressure detection spare (4) pressure numerical value, the break-make of control valve (23) is controlled to the control module.
2. The oil-cooled compressor with multiple circuits of claim 1, wherein: the device also comprises an adjusting component (5) for adjusting the distance between the fixed half rings.
3. The oil-cooled compressor with multiple circuits of claim 2, wherein: the adjusting assembly (5) comprises a stud (51) penetrating through the two fixed half rings and rotating pieces (52) in threaded fit with the two ends of the stud (51), and the rotating pieces (52) are connected with a power piece for driving the rotating pieces (52) to rotate along one direction and a non-return piece for preventing reverse rotation.
4. Oil-cooled compressor with multiple lines according to claim 3, characterized in that: the control module controls the operation of the power part according to the pressure value of the pressure detection part (4).
5. A control method of an oil-cooled compressor having a plurality of pipes, comprising the oil-cooled compressor having a plurality of pipes according to claim 1, characterized in that:
the pressure detection part (4) detects pressure at certain time intervals and sends pressure values to the control module;
the control module receives the pressure values on the flexible connecting components (22) and calculates the pressure values with a preset value to obtain an absolute value of a difference value, and the absolute value is accumulated to obtain the total pressure on the flexible connecting components (22);
when the machine is started each time, the control module drives a control valve (23) corresponding to the pipeline (21) with the minimum total driving pressure to open;
the control module records the total amount of pressure on the plurality of flexible connecting assemblies (22) at each shutdown and issues an alarm when the total amount of pressure exceeds a preset value.
6. A method for controlling an oil-cooled compressor having a plurality of pipes, comprising the oil-cooled compressor having a plurality of pipes according to claim 4, wherein:
the pressure detection part (4) detects pressure at certain time intervals and sends pressure values to the control module;
the control module receives the pressure values on the flexible connecting components (22) and calculates the pressure values with a preset value to obtain an absolute value of a difference value, and the absolute value is accumulated to obtain the total pressure on the flexible connecting components (22);
when the machine is started each time, the control module drives a control valve (23) corresponding to the pipeline (21) with the minimum total driving pressure to open;
the control module records the total pressure on the flexible connecting components (22) during shutdown every time, and when the total pressure exceeds a preset value, a driving signal is sent to the power part, the power part runs a preset stroke, and the total pressure is reset;
the control module records the preset travel of the power part and superposes the preset travel to obtain the total travel, and the total travel reaches the threshold value to send a warning signal and stop the corresponding control valve (23) to be opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911270024.8A CN110925213B (en) | 2019-12-11 | 2019-12-11 | Oil-cooled compressor with multiple pipelines and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911270024.8A CN110925213B (en) | 2019-12-11 | 2019-12-11 | Oil-cooled compressor with multiple pipelines and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110925213A true CN110925213A (en) | 2020-03-27 |
| CN110925213B CN110925213B (en) | 2021-09-03 |
Family
ID=69860140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911270024.8A Active CN110925213B (en) | 2019-12-11 | 2019-12-11 | Oil-cooled compressor with multiple pipelines and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110925213B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001065758A (en) * | 1999-08-24 | 2001-03-16 | Tokai Kokan Tsugite Kk | Pipe joining structure |
| CN2813936Y (en) * | 2005-07-01 | 2006-09-06 | 烟台冰轮股份有限公司 | Screw refrigerating compressor set |
| WO2009028322A1 (en) * | 2007-08-27 | 2009-03-05 | Nowla Engineering Co., Ltd. | Loose flange pipe joint |
| CN102062271A (en) * | 2010-06-13 | 2011-05-18 | 龚岳强 | Connection device of full-diameter compressed air conveying pipeline |
| KR101501704B1 (en) * | 2014-10-13 | 2015-03-12 | 알루텍 (주) | Pipe Connecting Apparatus |
| CN105937658A (en) * | 2016-06-24 | 2016-09-14 | 陈吉美 | Wirelessly-controlled type cable holder |
-
2019
- 2019-12-11 CN CN201911270024.8A patent/CN110925213B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001065758A (en) * | 1999-08-24 | 2001-03-16 | Tokai Kokan Tsugite Kk | Pipe joining structure |
| CN2813936Y (en) * | 2005-07-01 | 2006-09-06 | 烟台冰轮股份有限公司 | Screw refrigerating compressor set |
| WO2009028322A1 (en) * | 2007-08-27 | 2009-03-05 | Nowla Engineering Co., Ltd. | Loose flange pipe joint |
| CN102062271A (en) * | 2010-06-13 | 2011-05-18 | 龚岳强 | Connection device of full-diameter compressed air conveying pipeline |
| KR101501704B1 (en) * | 2014-10-13 | 2015-03-12 | 알루텍 (주) | Pipe Connecting Apparatus |
| CN105937658A (en) * | 2016-06-24 | 2016-09-14 | 陈吉美 | Wirelessly-controlled type cable holder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110925213B (en) | 2021-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11959569B2 (en) | Method for operating a rotary device | |
| CN103026162A (en) | Heat exchanger with an improved connector for an air conditioning circuit of a motor vehicle | |
| CN111119283B (en) | Tap water supply equipment with anti-freezing function for severe cold area | |
| CN110925213B (en) | Oil-cooled compressor with multiple pipelines and control method | |
| US20190090036A1 (en) | Filter element sensor module having processing and wireless communication capablilities | |
| CN211853496U (en) | Integrated temperature control valve | |
| CN110905818B (en) | Oil-cooled compressor and control method | |
| CN110925212B (en) | Oil-cooled compressor and control method | |
| CN111076007B (en) | Flexible connection pipeline for oil-cold compressor and detection method | |
| CN110925214B (en) | Oil-cooled compressor with flexible connecting pipeline and detection method | |
| KR101975228B1 (en) | Control valve for mobile monitoring | |
| CN215526139U (en) | Magnetic chip detector mounting structure | |
| CN210033820U (en) | Melt gear pump and sealing structure thereof | |
| WO2021087202A1 (en) | Sensing leak in a multi-seal sealing assembly with sensors | |
| CN215791860U (en) | Sensor dysmorphism sealing washer installation frock mechanism | |
| CN211085492U (en) | High-temperature alarm device for intelligent numerical control equipment | |
| CN219195139U (en) | Corrosion prevention device capable of automatically adding zinc bars | |
| CN219242351U (en) | Oil leak detection device of motor and motor | |
| CN109751238B (en) | Melt gear pump and sealing structure thereof | |
| CN212272856U (en) | Breathable, waterproof and sealing combined structure of universal joint | |
| CN220556090U (en) | Automobile air conditioner pipeline joint | |
| CN109910540A (en) | A kind of automobile air conditioning refrigerating system with failure monitor function | |
| CN220206741U (en) | Flow pressure detection device | |
| CN211852986U (en) | Shunting temperature-sensing valve | |
| CN219452493U (en) | Piston ring type sealed centrifugal fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230110 Address after: 337000 area a, Lianhua Industrial Park, Pingxiang City, Jiangxi Province Patentee after: Jiangxi Yingsai Compressor Co.,Ltd. Address before: 337100 B District, Lianhua County Industrial Park, Pingxiang, Jiangxi Patentee before: JIANGXI FENGSHI COMPRESSOR CO.,LTD. |