CN104815408A - Indoor fire hydrant press testing device with high testing efficiency and press testing method using same - Google Patents

Indoor fire hydrant press testing device with high testing efficiency and press testing method using same Download PDF

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Publication number
CN104815408A
CN104815408A CN201510261177.1A CN201510261177A CN104815408A CN 104815408 A CN104815408 A CN 104815408A CN 201510261177 A CN201510261177 A CN 201510261177A CN 104815408 A CN104815408 A CN 104815408A
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China
Prior art keywords
pressure
indoor hydrant
testing
pressure testing
indoor
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CN201510261177.1A
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Chinese (zh)
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CN104815408B (en
Inventor
万继果
卢文供
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Fujian whale Fire Control Co., Ltd.
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FUJIAN SANJING FIRE-FIGHTING EQUIPMENT Co Ltd
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Priority to CN201510261177.1A priority Critical patent/CN104815408B/en
Publication of CN104815408A publication Critical patent/CN104815408A/en
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    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C37/00Control of fire-fighting equipment
    • A62C37/50Testing or indicating devices for determining the state of readiness of the equipment

Abstract

The invention relates to an indoor fire hydrant press testing device with high testing efficiency and a press testing method using the same. The press testing device comprises a rack, a fixing mechanism and a press testing mechanism, wherein the fixing mechanism and the press testing mechanism are assembled on the rack; the fixing mechanism comprises a base, a lateral clamping mechanism, a clamp plate and a locating bar; the lateral clamping mechanism is matched with the clamp plate to clamp a water inlet end of an indoor fire hydrant; the press testing mechanism comprises an outlet covering device, a press testing waterway system and an inlet covering device; the outlet covering device is used for covering a water outlet of the indoor fire hydrant; the inlet covering device is used for covering a water inlet of the indoor fire hydrant; the press testing waterway system is communicated with the water inlet of the indoor fire hydrant. The press testing method is characterized by putting and fixing the indoor fire hydrant according to a specific mode and carrying out primary press testing and secondary press testing on the indoor fire hydrant by using a press testing waterway system on the premise of not removing the indoor fire hydrant. The press testing device has a simple structure, is small and exquisite, is convenient to use, has a long service life, is lower in production cost and can achieve the effects of effectively reducing the workloads of workers and effectively improving the press testing efficiency.

Description

The indoor hydrant pressure testing machine that testing efficiency is high and pressure-measuring method thereof
Technical field
The present invention relates to a kind of pressure testing device for fire hydrant, refer to the indoor hydrant pressure testing machine that a kind of testing efficiency is high and pressure-measuring method thereof especially.
Background technology
Indoor hydrant is the abbreviation of indoor fire hydrant, indoor fire hydrant is that pipe network in house is to delivery of water, be with valvular interface, be the indoor fixed fire protection system such as factory, warehouse, skyscraper, public building and boats and ships, usually be arranged in fire hydrant box, support the use with the equipment such as fire hose and hydraulic giant.After obtaining finished product indoor hydrant, need to test the key self structure intensity of indoor hydrant and the sealing effectiveness of flap, the pressure testing machine that adopts is tested it more at present.
The testing procedure of pressure testing machine to indoor hydrant conventional mostly at present is: closed by the flap of indoor hydrant, it is made to be in the state of shutoff, the water inlet end of indoor hydrant is transferred to the pressure testing port of pressure testing machine, then carry out port to fix, hydraulic pressure is made to reach setting numerical value to the water inlet end water filling of indoor hydrant again, pressurize certain hour is to test the structural strength of indoor hydrant, then pressure release unload indoor hydrant, rotate again indoor hydrant its water side is engaged with the pressure testing port of pressure testing machine, fixing, then water filling pressurize certain hour are to test the sealing of flap.As can be seen here, the work such as existing pressure testing machine needs to carry out for twice the docking of indoor hydrant and pressure testing port, fixes, pressure testing, dismounting, cause the work pressure test amount of indoor hydrant greatly, efficiency is very low.
In addition, application number be 201420440715.4 Chinese invention patent disclose a kind of indoor hydrant and automatically control pressure testing machine, when this pressure testing machine carries out pressure testing operation to an indoor hydrant, need two circuits systems, be namely connected with the water inlet end of indoor hydrant and water side respectively two overlap pressure testing system (pressure testing system that first, second pressure text head configures respectively).Volume due to indoor hydrant is not very large, and its space required for pressure testing region does not obviously need very large yet, and two cover pressure measuring systems or in this zonule complex distributions, or need larger assembly space, and the cost of manufacture of this pressure testing machine is inevitable higher.
Summary of the invention
The invention provides the high indoor hydrant pressure testing machine of a kind of testing efficiency and pressure-measuring method thereof, with overcome existing pressure testing machine exist pressure testing operation numerous and diverse, pressure testing efficiency is low, pressure testing machine complex structure and other problems.
The present invention adopts following technical scheme:
The indoor hydrant pressure testing machine that testing efficiency is high, comprises frame and the fixed mechanism that is assemblied in frame and pressure testing mechanism.This fixed mechanism comprises base, side clamp mechanism, clamp and backstay, this base top surface is provided with the cambered surface matched with indoor hydrant outer wall and caves in, side clamp mechanism coordinates the water inlet end end being used for clip indoor hydrant with clamp, backstay is for locating position, indoor hydrant water side.This pressure testing mechanism comprises outlet capping apparatus, pressure testing water circuit system, entrance closing cover device; This outlet capping apparatus is used for the delivery port of capping indoor hydrant, and this entrance closing cover device is used for the water inlet of capping indoor hydrant, and this pressure testing water circuit system is communicated with indoor hydrant water inlet by this entrance closing cover device.
Further:
Above-mentioned side clamp mechanism comprises side folder oil cylinder, side clamping plate, side Boards wall is assemblied in the outer end of this side folder oil cylinder bar, side clamping plate and above-mentioned clamp are respectively equipped with an arc bayonet socket matched with indoor hydrant water inlet end outer wall, clamp is removably fixedly assemblied in frame, and two arc bayonet socket opposition are arranged.
Above-mentioned outlet capping apparatus comprises upper cylinder and seaming chuck, and upper cylinder moves up and down for driving transmission seaming chuck, and seaming chuck bottom surface is used for the delivery port of capping indoor hydrant.Above-mentioned outlet capping apparatus also comprises upper binding head, this upper binding head is fixed at above-mentioned upper cylinder cylinder bar outer end, the bottom structure spherical in shape of this upper binding head, the top of above-mentioned seaming chuck is provided with the spherical depression matched with upper binding head bottom, and upper binding head bottom is fixedly assemblied in seaming chuck by fixed head.
Above-mentioned entrance closing cover device comprises pressure testing oil cylinder and pressure text head, and pressure testing oil cylinder moves forward and backward for driving transmission pressure text head, and pressure text head bottom surface is used for the water inlet of capping indoor hydrant.Above-mentioned entrance closing cover device also comprises rear connector, this rear connector is fixed at above-mentioned upper cylinder cylinder bar front end, the front end structure spherical in shape of this rear connector, the back of above-mentioned pressure text head is provided with the spherical depression matched with rear connector front end, and rear connector bottom is fixedly assemblied in pressure text head by fixed head.
Also comprise computer controller, computer controller is for controlling above-mentioned fixed mechanism and the action according to the order of sequence of above-mentioned pressure testing mechanism.
Above-mentioned pressure testing water circuit system is configured with hydraulic pressure detection head, and this hydraulic pressure detection head is used for the hydraulic pressure detecting pressure testing water circuit system in real time, and by hydraulic pressure data feedback to this computer controller.
Also comprise alarm, this alarm is used for reporting to the police when above-mentioned computer controller receives abnormal hydraulic pressure data in pressure measurement process.
The pressure-measuring method of the indoor hydrant pressure testing machine using above-mentioned testing efficiency high, comprises the following step of carrying out successively:
A. fix: indoor hydrant is positioned over above-mentioned base, rotate indoor hydrant and its water side outer wall is connected with above-mentioned backstay, side clamp mechanism action makes indoor hydrant water inlet end clip between side clamp mechanism and clamp, thus fixing indoor hydrant;
B. a pressure testing: outlet capping apparatus action the delivery port of capping indoor hydrant, entrance closing cover device action the water inlet of capping indoor hydrant; Screwing indoor hydrant makes flap be in off state, and pressure testing water circuit system supplies water, and water enters indoor hydrant water inlet by pressure text head, keeps the hydraulic pressure certain hour of setting value; If period, flap leaked, then stop work pressure test; If without leaking, then carry out secondary pressure testing;
C. two pressure testings: turn flap makes indoor hydrant be in opening state, pressure testing water circuit system continues to supply water, and keeps the hydraulic pressure certain hour of setting value; If period, indoor hydrant leaked, then stop work pressure test; If without leaking, then increase hydraulic pressure and keep the hydraulic pressure certain hour of setting value, if period indoor hydrant deform or ftracture or seep water, then stop work pressure test; If without significant change, then indoor hydrant pressure testing is qualified.
From the above-mentioned description to structure of the present invention, compared to the prior art, tool of the present invention has the following advantages: pressure testing machine structure of the present invention is simple, easy-to-use, a pressure testing unit only needs a supply channel, and the structural configuration of each mechanism of pressure testing machine is compact and reasonable, has both made pressure testing machine long service life, maintenance work is few, also make the production cost of pressure testing machine lower, and it is little to take up room, is conducive to the Appropriate application in space, workshop; In addition, whole pressure testing process, when staff only needs indoor hydrant to complete by specific mode placement, a pressure testing, turn indoor hydrant handwheel makes its work being in opening state and taking off indoor hydrant, other action is completed automatically by indoor set, and the Qualification of automatic judgment indoor hydrant, effectively reduce the workload of staff, staff can take into account the operation of multiple pressure testing unit simultaneously, effectively improves the pressure testing efficiency of indoor hydrant; In addition, the frame mode of fixed mechanism of the present invention, indoor hydrant can be put by pressure measurement requirement fast, make the delivery port of indoor hydrant and water inlet can respectively with seaming chuck and pressure text head Dock With Precision Position, and whole pressure testing process is very little to the destructiveness of indoor hydrant at clamping place, can protect indoor hydrant well; Finally, requirement is put in the position that the connected mode of upper binding head and rear connector reduces indoor hydrant, can either ensure the sealing of seaming chuck and indoor hydrant delivery port, also can reduce further the amount of labour of staff, improves pressure testing efficiency.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of pressure testing machine of the present invention.
Fig. 2 is the sectional structure schematic diagram of pressure testing machine of the present invention along A-A direction in Fig. 1.
Fig. 3 is the sectional structure schematic diagram of pressure testing machine of the present invention along B-B direction in Fig. 1.
Detailed description of the invention
With reference to the accompanying drawings the specific embodiment of the present invention is described.
With reference to Fig. 1, Fig. 2, Fig. 3, the indoor hydrant pressure testing machine that testing efficiency is high, comprise frame 1 and be assemblied in fixed mechanism 2 in frame 1, pressure testing mechanism 3, computer controller and alarm, computer controller is for controlling above-mentioned fixed mechanism 2 and the action according to the order of sequence of above-mentioned pressure testing mechanism 3, and this alarm is used for reporting to the police when above-mentioned computer controller receives abnormal hydraulic pressure data in pressure measurement process.
Continue with reference to Fig. 1, Fig. 2, Fig. 3, above-mentioned fixed mechanism 2 comprises base 21, side clamp mechanism 22, clamp 23 and backstay 24, this base 21 end face is provided with the cambered surface matched with indoor hydrant 4 outer wall and caves in, side clamp mechanism 22 coordinates water inlet end 41 end being used for clip indoor hydrant 4 with clamp 23, backstay 24 is for locating position, indoor hydrant 4 water side 42, and backstay 24 preferably adopts bolt arrangement.Above-mentioned side clamp mechanism 22 comprises side folder oil cylinder 221, side clamping plate 222, side clamping plate 222 are fixedly assemblied in the outer end of this side folder oil cylinder 221 cylinder bar, side clamping plate 222 are also configured with two pieces of guide pads 223 that opposition is arranged, two pieces of guide pads 223 are respectively equipped with gathering sill, side clamping plate 222 are assemblied in gathering sill and make displacement along gathering sill, side clamping plate 222 and above-mentioned clamp 23 are respectively equipped with an arc bayonet socket matched with indoor hydrant 4 water inlet end 41 outer wall, clamp 23 is removably fixedly assemblied in frame 1 by the mode that bolt locks, and two arc bayonet socket opposition are arranged.When pressure testing machine is used for carrying out pressure measurement to the indoor hydrant 4 of different model, only needs base 21, side clamping plate 222, the clamp 23 of changing corresponding model, then accommodation is done to the development length of backstay 24.
Continue with reference to Fig. 1, Fig. 2, Fig. 3, above-mentioned pressure testing mechanism 3 comprises outlet capping apparatus 31, pressure testing water circuit system 32, entrance closing cover device 33, and this pressure testing water circuit system 32 is communicated with indoor hydrant 4 water inlet by this entrance closing cover device 33.Above-mentioned outlet capping apparatus 31 comprises upper cylinder 311, seaming chuck 312 and upper binding head 313, upper cylinder 311 moves up and down for driving transmission seaming chuck 312, seaming chuck 312 bottom surface is used for the delivery port of capping indoor hydrant 4, this upper binding head 313 is fixed at above-mentioned upper cylinder 311 cylinder bar outer end, the bottom structure spherical in shape of this upper binding head 313, the top of above-mentioned seaming chuck 312 is provided with the spherical depression matched with upper binding head 313 bottom, and upper binding head 313 bottom is fixedly assemblied in seaming chuck 312 by fixed head 34.In addition, continue with reference to Fig. 3, seaming chuck 312 also configures automatic drain valve 314, automatic drain valve 314 is in opening state automatically when low pressure, when secondary pressure testing for discharging the air in indoor hydrant cavity, when pressure reaches certain numerical value, automatic drain valve 314 is closed automatically.And above-mentioned entrance closing cover device 33 comprises pressure testing oil cylinder 331, pressure text head 332 and rear connector 333, pressure testing oil cylinder 331 moves forward and backward for driving transmission pressure text head 332, pressure text head 332 bottom surface is used for the water inlet of capping indoor hydrant 4, this rear connector 333 is fixed at above-mentioned upper cylinder 311 cylinder bar front end, the front end structure spherical in shape of this rear connector 333, the back of above-mentioned pressure text head 332 is provided with the spherical depression matched with rear connector 333 front end, and rear connector 333 bottom is fixedly assemblied in pressure text head 332 by fixed head 34.The connected mode of seaming chuck 312 and upper cylinder 311 and pressure text head 332 and pressure testing oil cylinder 331, in artificial position of placing indoor hydrant 4 be not very standard time, be conducive to seaming chuck 312 or pressure text head 332 self adaptation can be aimed at and seal the delivery port or water inlet that cover indoor hydrant 4.
In addition, above-mentioned pressure testing water circuit system 32 is configured with hydraulic pressure detection head, and this hydraulic pressure detection head is used for the hydraulic pressure detecting pressure testing water circuit system 32 in real time, and by hydraulic pressure data feedback to this computer controller.In addition, the cylinder system (side folder oil cylinder 221, upper cylinder 311, pressure testing oil cylinder 331) that present embodiment uses also can use cylinder or motor to drive the modes such as screw mandrel to substitute, to realize the linear movement of seaming chuck 312, pressure text head 332 and side clamping plate 222.
Finally, continue with reference to Fig. 1, Fig. 2, Fig. 3, the pressure-measuring method of the indoor hydrant pressure testing machine using above-mentioned testing efficiency high, comprises the following step of carrying out successively:
A. fix: indoor hydrant 4 is positioned over above-mentioned base 21, rotating indoor hydrant 4 makes its water side 42 outer wall be connected with above-mentioned backstay 24, under the control of computer controller, side folder oil cylinder 221 action makes indoor hydrant 4 water inlet end 41 clip between side clamping plate 222 and clamp 23, thus fixing indoor hydrant 4;
B. a pressure testing: upper cylinder 311 promotes seaming chuck 312 and moves and the delivery port of capping indoor hydrant 4, and pressure testing oil cylinder 331 promotes the water inlet of pressure text head 332 capping indoor hydrant 4; Screwing indoor hydrant 4 makes flap 43 be in off state, and pressure testing water circuit system 32 supplies water, and water enters indoor hydrant 4 water inlet by pressure text head 332, keeps 1.6MPa hydraulic pressure 2 minutes; If period, hydraulic pressure detection head detected that hydraulic pressure changes, then represent that flap 43 leaks, alarm sends warning, can stop work pressure test; If hydraulic pressure detection head detects hydraulic pressure numerical stability, then represent that flap 43 is without leaking, can carry out secondary pressure testing, alarm equipment alarm indicates a pressure testing qualified;
C. two pressure testings: turn flap 43 makes indoor hydrant 4 be in opening state, pressure testing water circuit system 32 continues to supply water, and keeps 1.6MPa hydraulic pressure 2 minutes; If the flap 43 of indoor hydrant 4 was installed port and leaked period, alarm sends warning, then stop work pressure test; If without leaking, then increase hydraulic pressure keep 2.4MPa hydraulic pressure 2 minutes, if period indoor hydrant 4 deform or ftracture or seep water or hydraulic pressure detection head detects that hydraulic pressure changes, then represent that the structural strength of indoor hydrant 4 is not enough, alarm sends warning, can stop work pressure test; If without significant change, then 4 two pressure testings of alarm equipment alarm instruction indoor hydrant are qualified.
Above are only the specific embodiment of the present invention, but design concept of the present invention is not limited thereto, all changes utilizing this design the present invention to be carried out to unsubstantiality, all should belong to the behavior of invading scope.

Claims (10)

1. the indoor hydrant pressure testing machine that testing efficiency is high, the fixed mechanism comprising frame and be assemblied in frame and pressure testing mechanism, it is characterized in that: described fixed mechanism comprises base, side clamp mechanism, clamp and backstay, this base top surface is provided with the cambered surface matched with indoor hydrant outer wall and caves in, side clamp mechanism coordinates the water inlet end end being used for clip indoor hydrant with clamp, backstay is for locating position, indoor hydrant water side; Described pressure testing mechanism comprises outlet capping apparatus, pressure testing water circuit system, entrance closing cover device; This outlet capping apparatus is used for the delivery port of capping indoor hydrant, and this entrance closing cover device is used for the water inlet of capping indoor hydrant, and this pressure testing water circuit system is communicated with indoor hydrant water inlet by this entrance closing cover device.
2. the indoor hydrant pressure testing machine that testing efficiency as claimed in claim 1 is high, it is characterized in that: described side clamp mechanism comprises side folder oil cylinder, side clamping plate, side Boards wall is assemblied in the outer end of this side folder oil cylinder bar, side clamping plate and described clamp are respectively equipped with an arc bayonet socket matched with indoor hydrant water inlet end outer wall, clamp is removably fixedly assemblied in frame, and two arc bayonet socket opposition are arranged.
3. the indoor hydrant pressure testing machine that testing efficiency as claimed in claim 1 is high, it is characterized in that: described outlet capping apparatus comprises upper cylinder and seaming chuck, upper cylinder moves up and down for driving transmission seaming chuck, and seaming chuck bottom surface is used for the delivery port of capping indoor hydrant.
4. the indoor hydrant pressure testing machine that testing efficiency as claimed in claim 3 is high, it is characterized in that: described outlet capping apparatus also comprises upper binding head, this upper binding head is fixed at described upper cylinder cylinder bar outer end, the bottom structure spherical in shape of this upper binding head, the top of described seaming chuck is provided with the spherical depression matched with upper binding head bottom, and upper binding head bottom is fixedly assemblied in seaming chuck by fixed head.
5. the indoor hydrant pressure testing machine that testing efficiency as claimed in claim 1 is high, it is characterized in that: described entrance closing cover device comprises pressure testing oil cylinder and pressure text head, pressure testing oil cylinder moves forward and backward for driving transmission pressure text head, and pressure text head bottom surface is used for the water inlet of capping indoor hydrant.
6. the indoor hydrant pressure testing machine that testing efficiency as claimed in claim 5 is high, it is characterized in that: described entrance closing cover device also comprises rear connector, this rear connector is fixed at described upper cylinder cylinder bar front end, the front end structure spherical in shape of this rear connector, the back of described pressure text head is provided with the spherical depression matched with rear connector front end, and rear connector bottom is fixedly assemblied in pressure text head by fixed head.
7. the indoor hydrant pressure testing machine that testing efficiency as claimed in claim 1 is high, it is characterized in that: also comprise computer controller, computer controller is for controlling described fixed mechanism and the action according to the order of sequence of described pressure testing mechanism.
8. the indoor hydrant pressure testing machine that testing efficiency as claimed in claim 7 is high, it is characterized in that: described pressure testing water circuit system is configured with hydraulic pressure detection head, this hydraulic pressure detection head is used for the hydraulic pressure detecting pressure testing water circuit system in real time, and by hydraulic pressure data feedback to this computer controller.
9. the indoor hydrant pressure testing machine that testing efficiency as claimed in claim 8 is high, is characterized in that: also comprise alarm, and this alarm is used for reporting to the police when described computer controller receives abnormal hydraulic pressure data in pressure measurement process.
10. use the pressure-measuring method of the indoor hydrant pressure testing machine that the arbitrary described testing efficiency of claim 1 to 9 is high, it is characterized in that, comprise the following step of carrying out successively:
A. fix: indoor hydrant is positioned over described base, rotate indoor hydrant and its water side outer wall is connected with described backstay, side clamp mechanism action makes indoor hydrant water inlet end clip between side clamp mechanism and clamp, thus fixing indoor hydrant;
B. a pressure testing: outlet capping apparatus action the delivery port of capping indoor hydrant, entrance closing cover device action the water inlet of capping indoor hydrant; Screwing indoor hydrant makes flap be in off state, and pressure testing water circuit system supplies water, and water enters indoor hydrant water inlet by pressure text head, keeps the hydraulic pressure certain hour of setting value; If period, flap leaked, then stop work pressure test; If without leaking, then carry out secondary pressure testing;
C. two pressure testings: turn flap makes indoor hydrant be in opening state, pressure testing water circuit system continues to supply water, and keeps the hydraulic pressure certain hour of setting value; If period, indoor hydrant leaked, then stop work pressure test; If without leaking, then increase hydraulic pressure and keep the hydraulic pressure certain hour of setting value, if period indoor hydrant deform or ftracture or seep water, then stop work pressure test; If without significant change, then indoor hydrant pressure testing is qualified.
CN201510261177.1A 2015-05-21 2015-05-21 Testing efficiency high indoor hydrant pressure testing machine and its pressure-measuring method Active CN104815408B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106404298A (en) * 2016-11-28 2017-02-15 郴州雄建机床铸造有限公司 Fire hydrant hydraulic pressure sealing test device
CN107782541A (en) * 2017-09-15 2018-03-09 中车山东机车车辆有限公司 Rail wagon unit formula checking cylinder polytypic micro-control testing stand and method of work

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CN202393564U (en) * 2011-11-17 2012-08-22 电光防爆科技股份有限公司 Water pressure testing device of mining anti-explosion shell
JP2014016359A (en) * 2013-09-18 2014-01-30 Hochiki Corp Fire hydrant hose testing device
CN204142444U (en) * 2014-09-01 2015-02-04 辉煌水暖集团有限公司 A kind of check valve seal checkout equipment
CN204637402U (en) * 2015-05-21 2015-09-16 福建省三鲸消防器材有限公司 The indoor hydrant pressure testing machine that testing efficiency is high

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202052253U (en) * 2011-04-19 2011-11-30 张洪涛 Fire hydrant pressure detector
CN202126341U (en) * 2011-06-10 2012-01-25 江山市江郎峰消防设备有限公司 Pressure test device
CN202393564U (en) * 2011-11-17 2012-08-22 电光防爆科技股份有限公司 Water pressure testing device of mining anti-explosion shell
JP2014016359A (en) * 2013-09-18 2014-01-30 Hochiki Corp Fire hydrant hose testing device
CN204142444U (en) * 2014-09-01 2015-02-04 辉煌水暖集团有限公司 A kind of check valve seal checkout equipment
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Publication number Priority date Publication date Assignee Title
CN106404298A (en) * 2016-11-28 2017-02-15 郴州雄建机床铸造有限公司 Fire hydrant hydraulic pressure sealing test device
CN107782541A (en) * 2017-09-15 2018-03-09 中车山东机车车辆有限公司 Rail wagon unit formula checking cylinder polytypic micro-control testing stand and method of work
CN107782541B (en) * 2017-09-15 2020-12-01 中车山东机车车辆有限公司 Multi-model micro-control test bed for unit type brake cylinder of railway wagon and working method

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Effective date of registration: 20180509

Address after: 362000 Maoming Road, Fu Mao Industrial Park, Nanan Economic Development Zone, Quanzhou, Fujian

Patentee after: Fujian whale Fire Control Co., Ltd.

Address before: 362300 Maoming Road, Fu Mao Industrial Park, Nanan Economic Development Zone, Quanzhou, Fujian, China

Patentee before: FUJIAN SANJING FIRE-FIGHTING EQUIPMENT CO., LTD.