CN106552397B - Distributed point-by-point follow-up spraying memory alloy spring temperature control fire-fighting system - Google Patents
Distributed point-by-point follow-up spraying memory alloy spring temperature control fire-fighting system Download PDFInfo
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- CN106552397B CN106552397B CN201510632442.2A CN201510632442A CN106552397B CN 106552397 B CN106552397 B CN 106552397B CN 201510632442 A CN201510632442 A CN 201510632442A CN 106552397 B CN106552397 B CN 106552397B
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- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 25
- 238000005507 spraying Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 58
- 239000000306 component Substances 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 9
- 239000008358 core component Substances 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims description 2
- 239000008400 supply water Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/58—Pipe-line systems
- A62C35/68—Details, e.g. of pipes or valve systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/08—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Nozzles (AREA)
- Safety Valves (AREA)
Abstract
A memory alloy spring temperature control fire-fighting system with distributed point-by-point follow-up spraying belongs to the technical field of temperature control spraying fire-fighting gridding and is characterized by comprising a manual stop valve for gridding centralized compensation control, an auxiliary spraying fire-fighting valve group for temperature control of a memory alloy spring for parallel distributed point-to-point control, a pressure spring control type main spraying fire-fighting valve for point-by-point follow-up spraying and a connecting assembly based on a three-way pipe hoop. The invention can realize point-to-point large-space point-to-point spraying and can also carry out artificial spraying when the system fails.
Description
Technical Field
A memory alloy spring temperature control fire-fighting system with distributed point-by-point follow-up spraying belongs to a temperature control fire-fighting system, and particularly relates to the technical field of temperature control spraying fire-fighting gridding of a temperature control spraying fire-fighting valve based on a memory alloy spring.
Background
At present, the control mode of the temperature control spraying fire valve based on the memory alloy spring type is point-point type discrete, and the following problems exist: (1) the gridding distributed control based on a centralized control mode cannot be realized, the control effect in a certain space is influenced, and the timeliness of the control cannot be ensured, which is related to the narrow control field; (2) the reliability is poor, when the memory alloy spring fails, the corresponding monitoring point cannot be timely and effectively controlled when the monitored target reaches the temperature; (3) the point-to-point control makes the spraying points dispersed, and the debugging and the control are inconvenient. The invention overcomes the defect of point-to-point discrete control, can bring a plurality of spraying points into gridding management, and realizes distributed multipoint monitoring and manual opening and closing of safe spraying under centralized control as well as control of system debugging and emergency treatment.
Disclosure of Invention
The invention aims to provide a distributed point-by-point spraying memory alloy spring temperature control fire-fighting system which has good reliability, is convenient for centralized control and distributed multipoint monitoring and can be manually opened in emergency, and the system comprises: control by temperature change part, interlock part, manual control unit and adapting unit, wherein:
the temperature control part is a sub-valve, and comprises: vice valve body (1), vice disk seat (2), vice diaphragm formula piston (3), magnetic ring subassembly (4), magnetic core subassembly (5), biasing spring (6), memory alloy spring (7), screw (8), spring holder (9) and handle (11), wherein: the connecting barrel (10) is arranged at the upper end of the connecting barrel, the lower end of the connecting barrel is a barrel opening with a skirt edge on the outer side surface, a screw (8) sequentially penetrates through a spring seat (9) and a coaxially wound memory alloy spring (7) from top to bottom and then is in threaded connection with the barrel bottom of the connecting barrel (10), the upper end of the memory alloy spring (7) is connected with the lower end surface of the spring seat (9), a handle (11) is coaxially and slidably sleeved on the outer peripheral surface of the connecting barrel (10), the annular surface of the upper end of the handle (11) is connected with the lower end of the memory alloy spring (7), a magnetic ring assembly (4) is composed of a magnetic ring sleeve (41) and a pair of magnetic rings (42) which are coaxially and internally embedded in the magnetic ring sleeve (41) and are tightly configured, the skirt edge of the connecting barrel (10) is buckled and pressed between the upper end surface of the magnetic ring sleeve and the inner annular surface of the upper end of the magnetic ring sleeve (41), and the connecting barrel (10) is in sliding fit with the magnetic ring assembly (4), a magnetic core component (5) which is composed of a pair of magnetic cores (51), a magnetic core plug (52) and a pressure relief hole plug pad (53) sleeved on a convex part at the lower end of the magnetic core plug, wherein the magnetic core plug (5) is sequentially and tightly configured from top to bottom, a bias spring (6) is coaxially wound on the outer circumferential surface of the connecting barrel (10), the upper end of the bias spring is connected to the inner side of the upper ring surface of the handle (11), the lower end of the bias spring is connected to the upper ring surface of the magnetic ring sleeve (41), the auxiliary valve body (1) is provided with a horizontal water inlet at the left side and a horizontal water outlet at the right side, water flow opened in the auxiliary valve body (1) passes between the magnetic core plug and the magnetic core plug, a partition plate is arranged at one side close to the water inlet to divide the water flow channel into a water inlet channel and a water outlet channel, an annular groove coaxial with the magnetic core component (5) is provided with an auxiliary diaphragm type piston (3) arranged in the annular groove, vice diaphragm formula piston (3), the embedding is in on the axial up end of vice valve body (1), just opening vice diaphragm formula piston (3) to pressure release hole shutoff pad (53) below and leading to of going to water channel's pressure release hole (12), be located it has last pressure port (13) of intaking usefulness to open on the diaphragm of water inlet side, vice disk seat (2), be a truncated cone that the vertical section is "protruding" font and run through from top to bottom, lower extreme anchor ring detain and press on the up end of vice diaphragm formula piston (3), fixed connection is a stainless steel cylinder (14) that upper end is sealed, lower extreme opening and inversion on the axial inner ring face of the upper end of vice disk seat (2), stainless steel cylinder (14) coaxial sliding sleeve is in between magnetic ring subassembly (4) and magnetic core subassembly (5), and vice disk seat (2) downside with the annular medial surface of vice valve body (1) is with threaded connection and the medial surface of upside with handle (11) down side inner side face and handle (11) down The inner peripheral surface of the part is in threaded connection;
the interlock part is a main valve, and includes: main valve body (15), main valve cap (16), main valve connects (17), main diaphragm piston (18) and pressure spring (19), wherein: the main valve body (15), the left side is the horizontally water inlet, and the right side is horizontally main delivery port (20), be in for opening between the two the rivers passageway in the main valve body (15), there is a baffle in the water inlet side, handle rivers passageway divide into inhalant canal and exhalant canal, main valve cap (16), follow the radial symmetry of the main valve body (15) imbed along the axial and open in the annular groove of the main valve body (15) terminal surface, the outer peripheral face with the main valve body (15) the medial surface of annular groove is with threaded connection, main diaphragm formula piston (18) imbed on the inner bottom anchor ring face of main valve cap (16), under the normality, blocked with the nearly apopore of opening on main valve cap (16) anchor ring face of opening of main delivery port (20) of the main valve body (15), lie in open a main valve upper pressure hole (21) of intaking usefulness on the diaphragm of inhalant canal, the main valve joint (17) is a truncated cone which has a convex-shaped longitudinal section and penetrates through the main valve cap (16) from top to bottom, the annular surface of the bottom of the lower end is buckled and pressed on the upper end surface of the main diaphragm type piston (18), the annular peripheral surface is in threaded connection with the inner annular surface of the main valve cap (16), the upper end of the pressure spring (19) is connected with the upper inner annular bottom surface of the main valve joint (17), and the lower end of the pressure spring (19) is connected with the upper end surface of the main diaphragm type piston (18);
the manual control part is a manual stop valve (22);
the connecting part comprises a first connecting pipe (231) in threaded connection with a water outlet pipe of the manual stop valve (22), a second connecting pipe (232) in threaded connection with a water inlet of the auxiliary valve body (1), a third connecting pipe (233) in threaded connection with the outer peripheral surface of the upper side of a water outlet of the main valve joint (17), and a three-way pipe hoop (24) which is simultaneously in threaded connection with the right end of the first connecting pipe (231), the water inlet of the second connecting pipe (232) and the water outlet of the third connecting pipe (233);
in the four sections described above: the temperature control components are respectively arranged at each measuring point, the action temperature of the memory alloy spring is also called as abnormal temperature and depends on the ignition temperature of a monitored target, a water inlet of an auxiliary valve body (1) of each temperature control component and a water outlet of a second connecting pipe (232) supply water in a parallel connection mode, a main water supply pipe communicated with the water outlet of the second connecting pipe (232) is shared, the water outlet of each auxiliary valve body (1) is communicated with a first spray header arranged above the monitored target, the water outlet of a main valve body (15) is connected to the second spray header positioned above the same monitored target in a parallel connection mode through another auxiliary water pipe, coordinated spray on the same measuring point is realized, and distributed multipoint monitoring and manual opening and closing safe spray under centralized control are realized.
Drawings
Fig. 1, a schematic diagram of the principle of the present invention: n-1: 1 st of nth shower head, No. n-2: the 2 nd of the nth spray header, N is 1, 2, 3 … … N, N is the number of spray headers, and N is the temperature control member number.
FIG. 2 is a longitudinal sectional view of the present invention.
The reference symbols: 1. the auxiliary valve body, 2 the auxiliary valve seat, 3 the auxiliary diaphragm type piston, 4 the magnetic ring subassembly: 41. magnetic ring cover, 42 magnetic ring, 5 magnetic core subassembly: 51. the pressure relief valve comprises a magnetic core, 52 magnetic core plugs, 53 pressure relief hole plug pads, 6 biasing springs, 7 memory alloy springs, 8 screws, 9 spring seats, 10 connecting barrels, 11 handles, 12 pressure relief holes, 13 pressure up holes, 14 stainless steel cylinders, 15 main valve bodies, 16 main valve caps, 17 main valve joints, 18 main diaphragm type pistons, 19 pressure springs, 20 main water outlets, 21 main valve pressure up holes, 22 manual stop valves, 23 three connecting pipes (231, 232, 233) and 24 three-way pipe hoops.
Detailed Description
Under the normal state, the memory alloy spring (7) is in a compressed state, the magnetic ring component (4) is pushed downwards so as to drive the magnetic core component (5) to move downwards by means of magnetic force, the pressure relief hole (12) is blocked, the auxiliary valve is closed until the auxiliary valve does not flow water, meanwhile, the magnetic ring component (4) drives the connecting barrel (10) to move downwards and generate relative motion with the static handle (11), and the screw (8) is enabled to press the spring seat (9) downwards so that the memory alloy spring (7) is in a compressed state.
At the moment, the water pressure of inlet water enters the upper part of the main diaphragm type piston (18) through a main valve upper pressure hole (21) on the main diaphragm type piston (18), because of a component connected with a main valve joint (17), a sub valve body (1) comprising a temperature control component and a manual stop valve (22) are in a closed state, the pressure entering through the main valve upper pressure hole (21) cannot be discharged, so that the upper part of the main diaphragm type piston (18) forms higher pressure, the main diaphragm type piston (18) is settled downwards under the action of differential pressure, a main water outlet of the main valve body (15) is enabled to be free from water flowing out, the main valve body (15) is in a closed state, and the system does not work.
When the memory alloy spring (7) at one measuring point senses that the environmental temperature reaches the set action temperature, the memory alloy spring (7) is instantly extended, the screw (8) drives the connecting barrel (10) to move upwards, the magnetic ring component (4) drives the magnetic core component (5) to move upwards, the pressure relief hole (12) is opened, the auxiliary valve is opened simultaneously, water is discharged from the water outlet of the auxiliary valve body (1), simultaneously, the upper pressure of the main diaphragm type piston (18) is discharged, so that the pressure of the water inlet pressure of the main valve body (15) to the lower part of the main diaphragm type piston (18) is larger than the upper pressure of the main diaphragm type piston (18), under the push of the water inlet pressure, the main diaphragm type piston (18) moves upwards to open the water outlet of the main valve body (15), the main valve body (15) is in an open state, and at least more than two spray heads can work simultaneously at each measuring point of the system.
When the automatic component fails in case of accident, the manual stop valve (22) is opened, so that water under the upper pressure of the main diaphragm type piston (18) of the main valve body (15) is discharged through the manual stop valve (22), and the main diaphragm type piston (18) is pushed to move upwards by the water fed into the main valve body (15), so that the system works. When the valve is normally used, if the control of spraying in a larger range is not desired, only the manual stop valve (22) is connected with a water source to change the original drainage pressure function into pressurization, and point-to-point work can be formed only on the position controlled by the auxiliary valve.
Claims (1)
1. Distributed point-by-point follow-up spraying memory alloy spring temperature control fire-fighting system is characterized by comprising: control by temperature change part, interlock part, manual control unit and adapting unit, wherein:
the temperature control part is a sub-valve, and comprises: vice valve body (1), vice disk seat (2), vice diaphragm formula piston (3), magnetic ring subassembly (4), magnetic core subassembly (5), biasing spring (6), memory alloy spring (7), screw (8), spring holder (9) and handle (11), wherein: the connecting barrel (10) is arranged at the upper end of the connecting barrel, the lower end of the connecting barrel is a barrel opening with a skirt edge on the outer side surface, a screw (8) sequentially penetrates through a spring seat (9) and a coaxially wound memory alloy spring (7) from top to bottom and then is in threaded connection with the barrel bottom of the connecting barrel (10), the upper end of the memory alloy spring (7) is connected with the lower end surface of the spring seat (9), a handle (11) is coaxially and slidably sleeved on the outer peripheral surface of the connecting barrel (10), the annular surface of the upper end of the handle (11) is connected with the lower end of the memory alloy spring (7), a magnetic ring assembly (4) is composed of a magnetic ring sleeve (41) and a pair of magnetic rings (42) which are coaxially and internally embedded in the magnetic ring sleeve (41) and are tightly configured, the skirt edge of the connecting barrel (10) is buckled and pressed between the upper end surface of the magnetic ring sleeve and the inner annular surface of the upper end of the magnetic ring sleeve (41), and the connecting barrel (10) is in sliding fit with the magnetic ring assembly (4), a magnetic core component (5) which is composed of a pair of magnetic cores (51), a magnetic core plug (52) and a pressure relief hole plug pad (53) sleeved on a convex part at the lower end of the magnetic core plug, wherein the magnetic core plug (5) is sequentially and tightly configured from top to bottom, a bias spring (6) is coaxially wound on the outer circumferential surface of the connecting barrel (10), the upper end of the bias spring is connected to the inner side of the upper ring surface of the handle (11), the lower end of the bias spring is connected to the upper ring surface of the magnetic ring sleeve (41), the auxiliary valve body (1) is provided with a horizontal water inlet at the left side and a horizontal water outlet at the right side, water flow opened in the auxiliary valve body (1) passes between the magnetic core plug and the magnetic core plug, a partition plate is arranged at one side close to the water inlet to divide the water flow channel into a water inlet channel and a water outlet channel, an annular groove coaxial with the magnetic core component (5) is provided with an auxiliary diaphragm type piston (3) arranged in the annular groove, vice diaphragm formula piston (3), the embedding is in on the axial up end of vice valve body (1), just opening vice diaphragm formula piston (3) to pressure release hole shutoff pad (53) below and leading to of going to water channel's pressure release hole (12), be located it has last pressure port (13) of intaking usefulness to open on the diaphragm of water inlet side, vice disk seat (2), be a truncated cone that the vertical section is "protruding" font and run through from top to bottom, lower extreme anchor ring detain and press on the up end of vice diaphragm formula piston (3), fixed connection is a stainless steel cylinder (14) that upper end is sealed, lower extreme opening and inversion on the axial inner ring face of the upper end of vice disk seat (2), stainless steel cylinder (14) coaxial sliding sleeve is in between magnetic ring subassembly (4) and magnetic core subassembly (5), and vice disk seat (2) downside with the annular medial surface of vice valve body (1) is with threaded connection and the medial surface of upside with handle (11) down side inner side face and handle (11) down The inner peripheral surface of the part is in threaded connection;
the interlock part is a main valve, and includes: main valve body (15), main valve cap (16), main valve connects (17), main diaphragm piston (18) and pressure spring (19), wherein: the main valve body (15), the left side is the horizontally water inlet, and the right side is horizontally main delivery port (20), be in for opening between the two the rivers passageway in the main valve body (15), there is a baffle in the water inlet side, handle rivers passageway divide into inhalant canal and exhalant canal, main valve cap (16), follow the radial symmetry of the main valve body (15) imbed along the axial and open in the annular groove of the main valve body (15) terminal surface, the outer peripheral face with the main valve body (15) the medial surface of annular groove is with threaded connection, main diaphragm formula piston (18) imbed on the inner bottom anchor ring face of main valve cap (16), under the normality, blocked with the nearly apopore of opening on main valve cap (16) anchor ring face of opening of main delivery port (20) of the main valve body (15), lie in open a main valve upper pressure hole (21) of intaking usefulness on the diaphragm of inhalant canal, the main valve joint (17) is a truncated cone which has a convex-shaped longitudinal section and penetrates through the main valve cap (16) from top to bottom, the annular surface of the bottom of the lower end is buckled and pressed on the upper end surface of the main diaphragm type piston (18), the annular peripheral surface is in threaded connection with the inner annular surface of the main valve cap (16), the upper end of the pressure spring (19) is connected with the upper inner annular bottom surface of the main valve joint (17), and the lower end of the pressure spring (19) is connected with the upper end surface of the main diaphragm type piston (18);
the manual control part is a manual stop valve (22);
the connecting part comprises a first connecting pipe (231) in threaded connection with a water outlet pipe of the manual stop valve (22), a second connecting pipe (232) in threaded connection with a water inlet of the auxiliary valve body (1), a third connecting pipe (233) in threaded connection with the outer peripheral surface of the upper side of a water outlet of the main valve joint (17), and a three-way pipe hoop (24) which is simultaneously in threaded connection with the right end of the first connecting pipe (231), the water inlet of the second connecting pipe (232) and the water outlet of the third connecting pipe (233);
in the four sections described above: the temperature control components are respectively arranged at each measuring point, the action temperature of the memory alloy spring is also called as abnormal temperature and depends on the ignition temperature of a monitored target, a water inlet of an auxiliary valve body (1) of each temperature control component and a water outlet of the second connecting pipe (232) supply water in a parallel mode, a main water supply pipe communicated with the water outlet of the second connecting pipe (232) is shared, the water outlet of each auxiliary valve body (1) is communicated with a first spray header arranged above the monitored target, and the water outlet of the main valve body (15) is connected to the second spray header arranged above the same monitored target in a parallel mode through another auxiliary water pipe to realize cooperative spraying on the same measuring point.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510632442.2A CN106552397B (en) | 2015-09-29 | 2015-09-29 | Distributed point-by-point follow-up spraying memory alloy spring temperature control fire-fighting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510632442.2A CN106552397B (en) | 2015-09-29 | 2015-09-29 | Distributed point-by-point follow-up spraying memory alloy spring temperature control fire-fighting system |
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| Publication Number | Publication Date |
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| CN106552397A CN106552397A (en) | 2017-04-05 |
| CN106552397B true CN106552397B (en) | 2021-11-19 |
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| CN201510632442.2A Active CN106552397B (en) | 2015-09-29 | 2015-09-29 | Distributed point-by-point follow-up spraying memory alloy spring temperature control fire-fighting system |
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| CN112729613B (en) * | 2020-12-29 | 2023-12-22 | 海南电网有限责任公司五指山供电局 | Passive wireless temperature measurement system for power equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001340485A (en) * | 2000-05-31 | 2001-12-11 | Yamato Protec Co | Differential pressure type open valve and open-ended sprinkler system |
| CN101632854A (en) * | 2008-07-23 | 2010-01-27 | 全龙浩 | Control system for fire protection deluge valve |
| CN202526820U (en) * | 2012-04-24 | 2012-11-14 | 韩效亮 | Automatic fire protection spraying system |
| CN104056379A (en) * | 2013-03-19 | 2014-09-24 | 吉林省天佰立科技有限公司 | Opening-closing system of deluge valve for fire fighting |
| CN204972814U (en) * | 2015-09-29 | 2016-01-20 | 全龙浩 | Memory alloy spring control by temperature change fire extinguishing system that distributing type pointwise follow -up sprayed |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9080685B2 (en) * | 2012-02-07 | 2015-07-14 | Tianbaili new technology development Co. Ltd | Double-switched automatic sprinkler valve |
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2015
- 2015-09-29 CN CN201510632442.2A patent/CN106552397B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001340485A (en) * | 2000-05-31 | 2001-12-11 | Yamato Protec Co | Differential pressure type open valve and open-ended sprinkler system |
| CN101632854A (en) * | 2008-07-23 | 2010-01-27 | 全龙浩 | Control system for fire protection deluge valve |
| CN202526820U (en) * | 2012-04-24 | 2012-11-14 | 韩效亮 | Automatic fire protection spraying system |
| CN104056379A (en) * | 2013-03-19 | 2014-09-24 | 吉林省天佰立科技有限公司 | Opening-closing system of deluge valve for fire fighting |
| CN204972814U (en) * | 2015-09-29 | 2016-01-20 | 全龙浩 | Memory alloy spring control by temperature change fire extinguishing system that distributing type pointwise follow -up sprayed |
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| CN106552397A (en) | 2017-04-05 |
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Effective date of registration: 20220817 Address after: 102444 No. 86, Wanxing Road, Changyang, Fangshan District, Beijing-A3981 Patentee after: Beijing Quanlonghao Technology Development Co., Ltd. Address before: Room 811, building 12, Greenland Qihang international, biological medicine base, Daxing District, Beijing 102600 Patentee before: Quan Longhao |
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