CN211853537U - Instrument wind sledge device - Google Patents
Instrument wind sledge device Download PDFInfo
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- CN211853537U CN211853537U CN201922286879.1U CN201922286879U CN211853537U CN 211853537 U CN211853537 U CN 211853537U CN 201922286879 U CN201922286879 U CN 201922286879U CN 211853537 U CN211853537 U CN 211853537U
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- instrument
- instrument wind
- air
- storage tank
- wind
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 71
- 238000001179 sorption measurement Methods 0.000 claims abstract description 37
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 35
- 239000007789 gas Substances 0.000 claims description 16
- 230000008929 regeneration Effects 0.000 claims description 10
- 238000011069 regeneration method Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000003345 natural gas Substances 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 21
- 239000000428 dust Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000002274 desiccant Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 150000002829 nitrogen Chemical class 0.000 description 1
- -1 oxygen ions Chemical class 0.000 description 1
- 238000004092 self-diagnosis Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Drying Of Gases (AREA)
- Compressor (AREA)
Abstract
The utility model relates to the technical field of natural gas equipment detection, the utility model provides an instrument wind sledge device, which comprises an instrument wind system, a nitrogen making machine and a sledge base for installing and fixedly connecting the instrument wind system and the nitrogen making machine, wherein the instrument wind system comprises a screw air compressor, a compressed air storage tank, a filter, a cold dryer, a micro-thermal adsorption dryer, an instrument wind storage tank and pipelines connected with each other; the instrument air storage tank and the nitrogen making machine are connected through a pipeline, a valve and a pressure reducing valve are arranged on the pipeline, and the whole instrument air system and the nitrogen making machine are installed on the skid base. The instrument wind sledge device of the utility model has the advantages that the instrument wind sledge has the characteristics of compact structure, small occupied space and volume and full automation; the one-on one-standby mode of the double systems can realize continuous operation.
Description
Technical Field
The utility model relates to a natural gas equipment detects technical field, concretely relates to instrument wind sledge device.
Background
The instrument wind is a power source of all pneumatic valves in the LNG production process, and the pressure of the instrument wind needs to be kept within the range of 0.4MPa-0.8 MPa. Once the pressure is lower than 0.4MPa, the pneumatic valve can not work normally, so that production is interrupted, a large amount of natural gas is directly discharged, resource waste is caused, and environmental pollution is caused. The existing LNG factory instrument air system is generally composed of two screw air compressors and a set of heatless regeneration device. Under normal conditions, the screw air compressor is used and prepared, sucked air is compressed to about 0.8MPa, and then oil, moisture and particle impurities separated by compression are removed through a heatless regeneration device, so that the gas quality meets the requirements of instrument wind. Theoretically, two air compressors can be used satisfactorily, but in view of the limitation of factors such as equipment quality and maintenance execution conditions, under the condition that one air compressor fails and cannot be used for standby, the instrument air system only maintains pressure by using the remaining air compressor. Once the air compressor is shut down due to the situations of self component deterioration, operation parameter triggering interlocking, manual misoperation or accidental power failure and the like, the pressure of an instrument air system can be rapidly reduced under the condition that the pressure cannot be supplemented, various pneumatic valves return to the air loss state, finally, the production device is shut down, large economic loss is caused, and casualties are caused seriously.
In the patent number CN203892873U, disclose "LNG mill instrument wind ally oneself with supply support system more", including instrument wind system, nitrogen gas system draw forth the pipeline with instrument wind system's air buffer tank connects, will pass through the compressed gas that the pipeline was introduced is as instrument wind system's reserve air supply, be provided with pressure regulating valve group, cut-off valve group and check valve on the pipeline. The pipeline is two, pressure regulating valve group is one set of pneumatic pressure regulating valve group, the shut-off valve group is one set of pneumatic shut-off valve group, the check valve is two check valves. Use this utility model back to cause the probability that LNG apparatus for producing parkked with instrument wind system's the mistake wind and fall to zero basically, therefore produce very big economic benefits and security benefit.
Although the problem that the LNG production device stops due to the fact that the traditional instrument wind system loses wind is solved, the instrument wind skid device with a compact structure is lacked; the whole instrument wind system structure is disordered in installation and large in size.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an instrument wind sledge device has solved the chaotic, great problem of occupation space volume of traditional instrument wind system pipeline and equipment structure installation.
The utility model provides an instrument wind sledge device, which comprises an instrument wind system, a nitrogen making machine and a sledge base for fixedly connecting the instrument wind system and the nitrogen making machine, wherein the instrument wind system comprises a screw air compressor, a compressed air storage tank, a filter, a cold dryer, a micro-thermal adsorption dryer, an instrument wind storage tank and a connecting pipeline; the instrument air storage tank and the nitrogen making machine are connected through a pipeline, a valve and a pressure reducing valve are arranged on the pipeline, the filter comprises an A-level filter, a C-level filter and a T-level filter, the C-level filter is respectively connected with the compressed air storage tank and the cold dryer through pipelines, the T-level filter is connected with the cold dryer and the micro-thermal adsorption dryer through pipelines, and the A-level filter is connected with the micro-thermal adsorption dryer and the instrument air storage tank through pipelines.
The utility model discloses an application principle lies in, and the air of this equipment gets into screw compressor machine through entry air cleaner again earlier, can reach 0.8MPa at screw compressor machine export gas pressure, and screw compressor machine internally mounted has oil filter and oil separator, makes the air through screw compressor machine not contain oil basically. The compressed air enters a compressed air storage tank to stabilize the pressure and flow rate of the compressed air, and then the compressed air passes through a C-level filter in sequence, so that the dust precision is less than or equal to 5 mu m, and the oil content is less than or equal to 3 ppm. Then the compressed air is cooled by a cooling dryer to remove part of the water. The compressed air passing through the cold dryer enters a T-stage filter, so that the dust precision is less than or equal to 1 mu m, and the oil content is less than or equal to 1 ppm. The compressed air filtered by the T-level filter enters a micro-thermal adsorption dryer, and the dew point of the passing compressed air can reach-20 to-70 ℃ through adsorption. The compressed air with micro water passes through the A-stage filter to remove particles carried in the micro-thermal adsorption dryer, so that the dust precision is less than or equal to 0.01 mu m, the oil content is less than or equal to 0.01ppm, and the compressed air enters an instrument air storage tank for storage so as to be used by a subsequent nitrogen making machine. And finally, the purified air enters a nitrogen making machine to make nitrogen required by the wind flow of the instrument.
The utility model has the advantages that the instrument wind sledge device is integrated on a sledge base, and the pipeline connection is optimized, so that the whole structure is compact, the occupied space is small, and the transportation is convenient and fast and is full-automatic; the one-open one-standby mode of the double-system not only ensures that the whole instrument air sledge device can realize continuous operation, but also ensures the compactness of the pipeline connection structure when the one-open one-standby mode is normally realized due to the double-double arrangement of the screw air compressor, the filter, the cold dryer and the micro-thermal adsorption dryer. The product can not only realize the function that the traditional instrument wind system is stable and continuously provides clean instrument wind, but also realize nitrogen making machine nitrogen function integration on the basis.
Drawings
Fig. 1 is a schematic view of an overall structure of an instrument wind sledge device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an instrument wind system of an instrument wind sledge device according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a nitrogen generator of an instrument wind sledge device according to an embodiment of the present invention;
fig. 4 is an elevation view of an instrument wind system of an instrument wind sledge device according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of an instrument wind system a of an instrument wind sledge device according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional view of an instrument wind system B of an instrument wind sledge device according to an embodiment of the present invention;
fig. 7 is a schematic view of an internal structure of a nitrogen generator of an instrument wind sledge device according to an embodiment of the present invention;
wherein: the device comprises a screw air compressor 1, a compressed air storage tank 2, a cold dryer 3, a micro-thermal adsorption dryer 4, an instrument air storage tank 5, a skid base 7, an A-stage filter 8, a C-stage filter 9, a T-stage filter 10, an adsorption tower 11, an air buffer tank 12, an air inlet 13, a nitrogen outlet 14 and a drain pipe 15.
Detailed Description
The following describes a meter wind sledge device according to the present invention with reference to the accompanying drawings and embodiments.
The PLC control system adopts a Swedish ABB electrical control system, a full-intelligent control system and a Chinese and English liquid crystal display screen, and is provided with a self-diagnosis and protection device; but remote control and many host computer chain control realize unmanned supervision, high-tech operation, are furnished with RS485 serial interface, input user DCS system, can monitor many unit remote control. The screw compressor 1 has a screw main machine, a motor, an exhaust system, an oil injection and oil-gas separation system, a cooling system and an electrical system which are integrated into a whole, does not need a special foundation, and is extremely convenient to carry and install. The grade C filter 9 can ensure that the dust precision is less than or equal to 5 mu m and the oil content is less than or equal to 3 ppm; the T-level filter 10 can ensure that the dust precision is less than or equal to 1 mu m and the oil content is less than or equal to 1 ppm; the A-stage filter 8 can ensure that the dust precision is less than or equal to 0.01 mu m and the oil content is less than or equal to 0.01 ppm. Wherein the connecting pipe fittings of the compressed air storage tank 2 and the instrument wind storage tank 5 in the figures 1 and 3 are a sewage discharge pipe 15; in fig. 1, two valves are arranged on a pipeline between the T-stage filter 10 and the micro thermal adsorption dryer 4 to the a-stage filter 8 for visual influence in space, wherein one valve is a pipeline connected with the lower part of the micro thermal adsorption dryer 4, and the other valve is a pipeline connected with the upper part of the micro thermal adsorption dryer 4.
As shown in fig. 1, 2, 3, 4, 5 and 6, an instrument air skid device comprises an instrument air system, a nitrogen generator and a skid base 7 for fixedly connecting the instrument air system and the nitrogen generator, wherein the instrument air system comprises a screw air compressor 1, a compressed air storage tank 2, a filter, a cold dryer 3, a micro-thermal adsorption dryer 4, an instrument air storage tank 5 and a connecting pipeline; instrument wind storage tank 5 and nitrogen generator pass through the tube coupling, be equipped with valve and relief pressure valve on the pipeline, the filter includes A level filter 8, C level filter 9 and T level filter 10, C level filter 9 passes through the tube coupling with compressed air storage tank 2 and cold machine 3 respectively, T level filter 10 passes through the pipeline and is connected with cold machine 3 and little hot adsorption dryer 4, A level filter 8 passes through the pipeline and is connected with little hot adsorption dryer 4 and instrument wind storage tank 5. Wherein, the right side of fig. 2 is an air inlet 13 connected with an air outlet of the instrument wind storage tank 5 of the instrument wind system of fig. 1, and the left side of fig. 2 is provided with a nitrogen outlet 14, which can adopt a nitrogen storage tank for collecting and storing nitrogen.
The utility model discloses an operation principle lies in, and the air of this equipment gets into screw compressor machine 1 through entry air cleaner again earlier, can reach 0.8MPa at 1 export gas pressure of screw compressor machine, and screw compressor machine internally mounted has oil filter and oil separator, makes the air through screw compressor machine 1 not contain oil basically. The compressed air enters the compressed air storage tank 2 again to stabilize the pressure and flow rate of the compressed air, and then the compressed air passes through the C-level filter 9 in sequence, so that the dust precision is less than or equal to 5 mu m, and the oil content is less than or equal to 3 ppm. Then the compressed air is cooled by a cooling dryer 3 to remove part of the water. The compressed air passing through the cold dryer 3 enters the T-stage filter 10, so that the dust precision is less than or equal to 1 mu m, and the oil content is less than or equal to 1 ppm. The compressed air filtered by the T-level filter 10 enters the micro-thermal adsorption dryer 4, and the dew point of the passing compressed air can reach-20 to-70 ℃ through adsorption. The compressed air with micro water passes through the A-stage filter 8 to remove particles carried in the micro-thermal adsorption dryer 4, so that the dust precision is less than or equal to 0.01 mu m, the oil content is less than or equal to 0.01ppm, and the compressed air enters the instrument air storage tank 5 for storage so as to be used by a subsequent nitrogen making machine. And finally, the purified air enters a nitrogen making machine to make nitrogen required by the wind flow of the instrument.
The utility model has the advantages that the instrument wind sledge device is integrated on a sledge base 7, and the pipeline connection is optimized, so that the instrument wind sledge device has the characteristics of compact overall structure, small occupied space, convenient transportation and full automation; the one-open one-standby mode of the double-system not only ensures that the whole instrument air sledge device can realize continuous operation, but also ensures the compactness of the pipeline connection structure when the one-open one-standby mode is normally realized by the double-double arrangement of the screw air compressor 1, the filter, the cold dryer 3 and the micro-thermal adsorption dryer 4. The product can not only realize the function that the traditional instrument wind system is stable and continuously provides clean instrument wind, but also realize nitrogen making machine nitrogen function integration on the basis.
The pressure reducing valve of the whole pipeline is connected with the PLC control system through a control circuit. Display all status information, fault alarm information, parameter settings, temperature and pressure, total and load run time, load/unload/full load display, emergency shutdown, operating mode, etc. The protection function that possesses includes: a) protecting the excessive exhaust temperature, wherein the exhaust temperature of the machine head exceeds 105 ℃, and immediately alarming and stopping the machine; b) protecting electric appliances, alarming electric appliance faults and stopping the electric appliances; c) overload protection, main motor (fan motor overload alarm and shutdown); d) the 380V power supply is shut down for phase-miss protection and phase-lack protection; e) overpressure protection, exhaust pressure exceeds the set value and alarms to stop; f) the oil-gas separator blockage alarm system has three alarm functions of oil-gas separator blockage alarm, air filtering blockage alarm and oil filter blockage alarm; g) the automatic temperature control system maintains the temperature of the lubricating oil to be higher than the pressure dew point temperature through a temperature control valve, and ensures that the oil temperature is in the optimal state; h) and the fault alarm device can prompt a user to replace parts and perform necessary maintenance when the unit fails.
The nitrogen making machine comprises two parallel adsorption towers 11 and an air buffer tank 12. Before and after the nitrogen making machine makes nitrogen gas, a filter is adopted for simple impurity gas filtration and pollution discharge; then, the oxygen in the nitrogen and oxygen content in the air is adsorbed by two adsorption towers 11 connected in parallel by using a molecular sieve air separation nitrogen making method, and oxygen ions are removed to obtain nitrogen. The nitrogen making machine adopts a frequency conversion type full-automatic nitrogen making machine which is HBFD295-100 and is produced by Suzhou Hongbo purifying equipment Limited.
The screw air compressor 1 is internally integrated with a screw host, a motor, an exhaust system, an oil injection and oil-gas separation system, a cooling system and an electrical system, and the screw air compressor 1 is further integrated with a display screen and an alarm unit. The screw compressor 1 has a screw main machine, a motor, an exhaust system, an oil injection and oil-gas separation system, a cooling system and an electrical system which are integrated into a whole, does not need a special foundation, is extremely convenient to carry and install, and adopts a BSTAIR (North Steer) air compressor.
A screw air compressor 1, a filter, a cold dryer 3 and a micro-thermal adsorption dryer 4 on a sledge base 7 of the instrument air sledge device are all arranged in parallel by adopting the same two devices. The device is characterized in that two screw air compressors 1, two filters, two cold dryers 3 and two micro-thermal adsorption dryers 4 are arranged on the same skid base; the one-on one-standby mode of the double equipment can realize continuous operation.
The micro-thermal adsorption dryer 4 adopts a double-cylinder type to adsorb moisture, and the two cylinders alternately adsorb moisture and desorb for regeneration. The micro-thermal adsorption dryer 4 is a double-cylinder type dryer which utilizes the peculiar micropores of the drying agent material to adsorb water molecules in the air according to the capillary action and simultaneously removes the adsorbed water according to the pressure relief desorption and the temperature rise of the adsorption waste heat. The micro-thermal adsorption dryer 4 has stable and consistent air outlet pressure dew point, and reasonable cylinder design ensures that the contact time of compressed air and a drying agent is 4.8 seconds, thereby meeting the dew point requirement of finished product gas; the loss of the regeneration gas is less than 6% -4%, the design of the excellent machine barrel is adopted, 95% of adsorption heat is stored, the stored heat is used for increasing the temperature of the regeneration gas in the regeneration stage, the desorption capacity of the equipment is improved, and the regeneration is more thorough; the desiccant has long service life and proper cylinder size, so that the flow rate and time of gas passing through the desiccant layer are kept in the optimal state, and the performance of the desiccant is fully exerted.
Claims (9)
1. An instrument air skid device is characterized by comprising an instrument air system, a nitrogen making machine and a skid base (7) for fixedly connecting the instrument air system and the nitrogen making machine, wherein the instrument air system comprises a screw air compressor (1), a compressed air storage tank (2), a filter, a cold dryer (3), a micro-thermal adsorption dryer (4), an instrument air storage tank (5) and a connecting pipeline; instrument wind storage tank (5) and nitrogen generator pass through the tube coupling, be equipped with valve and relief pressure valve on the pipeline, the filter includes A level filter (8), C level filter (9) and T level filter (10), C level filter (9) pass through the tube coupling with compressed air storage tank (2) and cold machine (3) respectively, T level filter (10) pass through the pipeline and are connected with cold machine (3) and little hot adsorption dryer (4), A level filter (8) pass through the pipeline and are connected with little hot adsorption dryer (4) and instrument wind storage tank (5).
2. The instrument wind ski device of claim 1, wherein: the pressure reducing valve of the whole pipeline is connected with the PLC control system through a control circuit.
3. The instrument wind ski device of claim 1 or 2, wherein: the nitrogen making machine comprises two parallel adsorption towers (11) and an air buffer tank (12).
4. The instrument wind ski device of claim 1 or 2, wherein: the screw air compressor (1) is internally integrated with a screw host, a motor, an exhaust system, an oil injection and oil-gas separation system, a cooling system and an electrical system, and the screw air compressor (1) is also integrated with a display screen and an alarm unit.
5. The instrument wind ski device of claim 3, wherein: the screw air compressor (1) is internally integrated with a screw host, a motor, an exhaust system, an oil injection and oil-gas separation system, a cooling system and an electrical system, and the screw air compressor (1) is also integrated with a display screen and an alarm unit.
6. The instrument wind ski device of claim 1, 2 or 5, wherein: a screw air compressor (1), a filter, a cold dryer (3) and a micro-thermal adsorption dryer (4) on a sledge base (7) of the instrument wind sledge device are all arranged in parallel by adopting the same two devices.
7. The instrument wind ski device of claim 1, 2 or 5, wherein: the micro-thermal adsorption dryer (4) adopts a double-cylinder type to adsorb moisture, and the two cylinders alternately adsorb moisture and desorb for regeneration.
8. The instrument wind ski device of claim 3, wherein: the micro-thermal adsorption dryer (4) adopts a double-cylinder type to adsorb moisture, and the two cylinders alternately adsorb moisture and desorb for regeneration.
9. The instrument wind ski device of claim 4, wherein: the micro-thermal adsorption dryer (4) adopts a double-cylinder type to adsorb moisture, and the two cylinders alternately adsorb moisture and desorb for regeneration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922286879.1U CN211853537U (en) | 2019-12-19 | 2019-12-19 | Instrument wind sledge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922286879.1U CN211853537U (en) | 2019-12-19 | 2019-12-19 | Instrument wind sledge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211853537U true CN211853537U (en) | 2020-11-03 |
Family
ID=73215809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922286879.1U Active CN211853537U (en) | 2019-12-19 | 2019-12-19 | Instrument wind sledge device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211853537U (en) |
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2019
- 2019-12-19 CN CN201922286879.1U patent/CN211853537U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 402560 No. 186 longan Avenue, Dongcheng Street office, Tongliang District, Chongqing (Industrial Park) Patentee after: Chongqing Xinyu Pressure Vessel Co.,Ltd. Address before: 402560 No. 186 longan Avenue, Dongcheng Street office, Tongliang District, Chongqing (Industrial Park) Patentee before: CHONGQING XINYU PRESSURE CONTAINER MANUFACTURE Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |