CN111111055A - Device for detecting flow of fire monitor of fire truck, strength of hydraulic pipeline and pressure resistance - Google Patents
Device for detecting flow of fire monitor of fire truck, strength of hydraulic pipeline and pressure resistance Download PDFInfo
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- CN111111055A CN111111055A CN202010042662.0A CN202010042662A CN111111055A CN 111111055 A CN111111055 A CN 111111055A CN 202010042662 A CN202010042662 A CN 202010042662A CN 111111055 A CN111111055 A CN 111111055A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000012360 testing method Methods 0.000 claims abstract description 32
- 230000003028 elevating effect Effects 0.000 claims abstract description 31
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C27/00—Fire-fighting land vehicles
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/50—Testing or indicating devices for determining the state of readiness of the equipment
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention provides a device for detecting the flow, the strength and the pressure resistance of a hydraulic pipeline of a fire monitor of a fire engine.A hydraulic pipeline is carried on a boom of the fire engine and is connected with a pressure limiting valve arranged on the fire engine, a water inlet pipeline of the pressure limiting valve is respectively connected with an electric adjustable pressure test pump and a fire monitor flow calibration mechanism through a three-way joint, and the fire monitor flow calibration mechanism is provided with a water supply pump set and an electromagnetic flowmeter connected between the water supply pump set and the three-way joint; the hydraulic pipeline at the top end of the arm support is provided with an exhaust controller, a channel is arranged in the exhaust controller, an electric control ball valve is arranged in the channel, one end of the channel is connected with the hydraulic pipeline through a flange, the other end of the channel is provided with an exhaust pipe, and the exhaust controller is further provided with a wireless control device and a power supply module which are connected with the electric control ball valve. The invention combines the calibration of the fire monitor of the elevating fire truck with the strength and pressure test of the hydraulic pipeline, thereby improving the detection efficiency of the elevating fire truck.
Description
Technical Field
The invention relates to detection of a fire monitor of a lifting fire truck, in particular to a device for detecting flow, hydraulic pipeline strength and pressure resistance of the fire monitor of the fire truck.
Background
The elevating fire truck is a fire truck which is provided with an elevating arm support (ladder frame), a swing mechanism and the like and is used for conveying fire fighters, fire extinguishing materials, rescuing trapped people or spraying fire extinguishing agents to high altitude. Generally divided into elevating platform fire trucks, aerial ladder fire trucks and elevating jet fire trucks. The working pressure of the water outlet pipeline of the elevating fire truck is usually not more than 1.6MPa, according to GB7956.12 part 12 of the fire truck: the requirement of elevating fire truck, the water outlet pipeline of elevating fire truck can bear 2 times of the maximum working pressure of waterway, and should not be permanently deformed or structurally damaged, so that the strength and pressure resistance of hydraulic pipeline of elevating fire truck are one of the key items for detection.
The fire monitor is as the device that lifts high class fire engine and spray extinguishing agent, according to the requirement of GB19156 general technical condition of fire monitor, its rated operating pressure is not more than 1.4MPa usually, consequently, directly detect hydraulic pipeline intensity and withstand voltage can cause the harm of fire monitor, if install the pneumatic valve additional at the fire monitor rear end again can lead to cantilever crane structure complexity to increase, and the overall arrangement of gas pipeline of being not convenient for.
Furthermore, according to GB7956.12 "fire engine part 12: elevating fire truck' standard, elevating type fire truck who is equipped with the fire pump should carry out 6h continuous operation test, and the play water flow of fire pump during continuous operation test should be the matching flow of fire pump and fire gun, therefore, the flow of calibration fire gun also is the indispensable link of elevating type fire truck detection.
The traditional methods for calibrating the flow of the fire monitor of the elevating fire truck and detecting the strength and pressure resistance of the hydraulic pipeline have dangerousness and uncertainty. For a lifting type fire truck with a working bucket, an arm support is usually extended to the maximum working height, the top end of a hydraulic pipeline is sealed in a manual high-altitude operation mode, and then a pipeline pressure test is carried out. For lifting a fire-fighting truck, the boom is usually extended to the maximum working amplitude, then the pipeline is filled with water through a water supply pump set, and then the boom is lifted to the highest working height to carry out a pipeline pressure test. However, limited to the structure of the elevated fire engine itself, the maximum working height is often greater than the maximum working amplitude, which results in a certain amount of air still existing in the hydraulic pipeline during the pressure test, and the compressibility of the gas is much greater than that of water, so that the method is time-consuming and inaccurate.
Disclosure of Invention
The invention aims to provide a device for detecting the flow rate, the hydraulic pipeline strength and the pressure resistance of a fire fighting monitor of a fire fighting truck, and also considers the flow rate calibration of the fire fighting monitor so as to improve the detection efficiency and the detection safety, and the specific scheme is as follows,
a device for detecting the flow rate, the strength and the pressure resistance of a hydraulic pipeline of a fire monitor of an elevating fire truck, wherein the hydraulic pipeline is arranged on an arm support of the elevating fire truck,
the water inlet end of the hydraulic pipeline is connected with a pressure limiting valve arranged on a fire fighting truck, the water inlet pipeline of the pressure limiting valve is respectively connected with an electric adjustable pressure test pump and a fire monitor flow calibration mechanism through a three-way joint, and the fire monitor flow calibration mechanism is provided with a water supply pump set and an electromagnetic flowmeter connected between the water supply pump set and the three-way joint;
an exhaust controller is installed on a hydraulic pipeline at the top end of the arm support, a channel is arranged in the exhaust controller, an electric control ball valve is arranged in the channel, one end of the channel is connected with the hydraulic pipeline through a flange, an exhaust pipe is arranged at the other end of the channel and connected with the atmosphere, and a wireless control device and a power supply module which are connected with the electric control ball valve are further arranged on the exhaust controller.
Further, the working pressure of the water supply pump set is 0-2.0 MPa, and the working flow is 0-120L/s.
Furthermore, the flange plate is characterized in that the bolt holes of the flange plate are kidney-shaped holes.
Furthermore, a straight pipe section with the pipe diameter not less than 5-10 times is arranged between the electromagnetic flowmeter and the water supply pump set at the front end, and a straight pipe section with the pipe diameter not less than 0-5 times is arranged between the electromagnetic flowmeter and the tee joint at the rear end.
Furthermore, the three-way joint is connected with a water inlet pipeline of the pressure limiting valve by adopting a plurality of DN80 interfaces.
Furthermore, the electric adjustable pressure test pump adopts a piston type plunger pump, and the provided pressure is 2 times of the maximum working pressure of the hydraulic pipeline.
Furthermore, the working pressure of the electric adjustable pressure test pump is 0-6.0 MPa, the working flow is 0-5L/s, and the electric adjustable pressure test pump is provided with a pressure tapping port connected with a hydraulic pipeline.
Furthermore, the wireless control device is a remote control terminal based on 4G and 5G.
Compared with the background art, the invention has the beneficial effects that:
1) the calibration of the fire monitor of the elevating fire truck is combined with the strength and pressure test of the hydraulic pipeline, so that the detection efficiency of the elevating fire truck is improved.
2) During the hydraulic pipeline strength and pressure test of the elevating fire truck, the electric ball valve which can be remotely operated is arranged at the top end of the hydraulic pipeline, so that air in the pipeline can be thoroughly discharged, the pressing time is shortened, and the potential safety hazard of manual high-altitude operation is eliminated.
3) The special three-way joint connects the electromagnetic flowmeter, the electric adjustable pressure test pump and the inlet of the external water supply pipeline of the fire engine, and avoids dismounting the water hose for many times.
4) The device has a simple structure, integrates two types of tests into a whole, eliminates potential safety hazards, and can be an important device for flow calibration and hydraulic pipeline strength and pressure resistance detection of a fire monitor of a lifting fire truck.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic view of a device for detecting the flow rate, hydraulic pipeline strength and pressure resistance of a fire monitor of an elevating fire truck according to the present invention;
FIG. 2 is a schematic view of an exhaust controller;
FIG. 3 is a schematic diagram of a control circuit of the exhaust controller;
fig. 4 is a schematic view of the flange.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
The invention provides a device for detecting the flow, the strength and the pressure resistance of a hydraulic pipeline of a fire monitor of an elevating fire truck, as shown in figure 1-2, the hydraulic pipeline 9 is carried on an arm support of the elevating fire truck, the water inlet end of the hydraulic pipeline 9 is connected with a pressure limiting valve 11 arranged on the fire monitor, a water inlet pipeline 13 of the pressure limiting valve 11 is respectively connected with an electric adjustable pressure test pump 8 and a fire monitor flow calibration mechanism through a three-way joint 3, and the fire monitor flow calibration mechanism is provided with a water supply pump set 1 and an electromagnetic flow meter 2 connected between the water supply pump set 1 and the three-way joint 3;
install an exhaust controller on the water conservancy pipeline 9 on cantilever crane top, be equipped with the passageway in the exhaust controller and the passageway embeds there is an automatically controlled ball valve 5, and passageway one end is passed through ring flange 4 and is linked to each other with water conservancy pipeline 9, and the other end is provided with a blast pipe 10 and links to each other with the atmosphere, still is provided with wireless control device 6 and the power module 7 that automatically controlled ball valve 5 links to each other on the exhaust controller, and automatically controlled ball valve 5 is provided power by power module 7, realizes wireless switching function through wireless control device 6.
Fig. 3 shows a schematic diagram of a control circuit of the exhaust controller, which carries a rechargeable lithium battery 22 (i.e. the power supply module 7), the rechargeable lithium battery 22 is equipped with a charging interface 21, and is equipped with a remote electric actuator 23 (i.e. the wireless control device 6) capable of remote communication, and the remote electric actuator 23 is equipped with an indicator light 24 which is normally on in an on state.
In an optional embodiment, the working pressure of the water supply pump set 1 is 0-2.0 MPa, and the working flow is 0-120L/s.
In an alternative embodiment, as shown in fig. 4, the bolt holes of the flange plate 4 are arc-shaped waist-shaped holes, which are common to the 6-hole type and the 8-hole type, so as to facilitate connection and installation.
In an alternative embodiment, the water supply pump group 1 is driven by an electric motor or a diesel engine, the output power of the water supply pump group is controlled by adjusting the rotating speed, and the working pressure and the flow rate of the water supply pump group not only meet the requirements of filling a hydraulic pipeline with water in a pressure resistance test, but also meet the requirements of spraying of a fire monitor. A straight pipe section with the pipe diameter not less than 5-10 times is arranged between the electromagnetic flowmeter 2 and the water supply pump set 1 at the front end, and a straight pipe section with the pipe diameter not less than 0-5 times is arranged between the electromagnetic flowmeter and the tee joint 3 at the rear end, so that a certain distance is kept, and the measurement accuracy of the electromagnetic flowmeter is improved.
In an optional embodiment, the special three-way joint 3 is respectively connected with an inlet of the hydraulic pipeline 9, the electromagnetic flowmeter 2 of the fire monitor flow calibration mechanism and the electric adjustable pressure test pump 8, the fire monitor flow calibration test and the pressure test of the hydraulic pipeline are realized through switching, and the trouble of back and forth disassembly is avoided. The special three-way joint 3 has the function of a water collector, and the diameters of pipelines in the three connecting directions are different. The three-way joint 3 is connected with the inlet pipeline 12 of the water supply pump set 1 by adopting a plurality of DN80 interfaces, and the interface of the three-way joint and the electromagnetic flowmeter 2 is matched with the drift diameter of the pipeline.
In an optional embodiment, the electrically adjustable pressure test pump 8 is a piston-type plunger pump, which can provide a pressure 2 times the maximum working pressure of the hydraulic pipeline 9, preferably, the working pressure of the electrically adjustable pressure test pump 8 is 0-6.0 MPa, and the working flow rate is 0-5L/s. In addition, the electric adjustable pressure test pump 8 is provided with a pressure tapping port 12 connected with the hydraulic pipeline 9 and used for detecting the internal pressure of the hydraulic pipeline 9, and the electric adjustable pressure test pump 8 is closed when the internal pressure of the hydraulic pipeline 9 meets the requirement.
The invention realizes the switching between two functions by the special three-way joint 3, and the whole working principle is as follows:
the elevating vehicle arm support is extended to the maximum working height, when a fire monitor calibration test is carried out, the electric adjustable pressure test pump 8 is closed, the water supply pump unit 1 supplies water to the fire monitor hydraulic pipeline 9 through the electromagnetic flowmeter 2, the injection flow of the fire monitor can be measured in real time through the flowmeter, and the flow of the fire monitor is calibrated by adjusting the output flow and the pressure of the water supply pump unit 1.
Similarly, when the hydraulic pipeline strength and pressure resistance test is carried out, the fire monitor is dismantled, the exhaust controller is installed at the top end of the arm support of the elevating vehicle through the flange plate, and a channel in the exhaust controller is connected with the hydraulic pipeline of the elevating fire truck. Firstly, opening the electric control ball valve 5, injecting water into the hydraulic pipeline 9 by the water supply pump set 1 until air in the pipeline is emptied, then closing the electric control ball valve 5 and the water supply pump set 1, and finally injecting pressure water into the hydraulic pipeline 9 by using the electric adjustable pressure test pump 8 until the pressure is increased to 2 times of the maximum working pressure of the water channel so as to detect whether the strength and the pressure resistance of the hydraulic pipeline meet the requirements or not.
The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments to equivalent variations, without departing from the spirit of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (8)
1. A device for detecting the flow rate, the hydraulic pipeline strength and the pressure resistance of a fire monitor of an elevating fire truck is characterized in that a hydraulic pipeline (9) is arranged on a boom of the elevating fire truck,
the water inlet end of a hydraulic pipeline (9) is connected with a pressure limiting valve (11) arranged on a fire engine, a water inlet pipeline (13) of the pressure limiting valve (11) is respectively connected with an electric adjustable pressure test pump (8) and a fire monitor flow calibration mechanism through a three-way joint (3), and the fire monitor flow calibration mechanism is provided with a water supply pump set (1) and an electromagnetic flow meter (2) connected between the water supply pump set (1) and the three-way joint (3);
the hydraulic pipeline (9) at the top end of the arm support is provided with an exhaust controller, a channel is arranged in the exhaust controller, an electric control ball valve (5) is arranged in the channel, one end of the channel is connected with the hydraulic pipeline (9) through a flange plate (4), the other end of the channel is provided with an exhaust pipe (10) connected with the atmosphere, and the exhaust controller is further provided with a wireless control device (6) and a power supply module (7) which are connected with the electric control ball valve (5).
2. The device for detecting the flow rate, the hydraulic pipeline strength and the pressure resistance of the fire monitor of the elevating fire truck according to claim 1, wherein the working pressure of the water supply pump set (1) is 0-2.0 MPa, and the working flow rate is 0-120L/s.
3. The device for detecting the flow rate, the hydraulic pipeline strength and the pressure resistance of the fire monitor of the elevated fire engine according to claim 1, wherein the bolt holes of the flange plate (4) are kidney-shaped holes.
4. The device for detecting the flow rate, the hydraulic pipeline strength and the pressure resistance of the fire monitor of the elevating fire truck according to claim 1, wherein a straight pipe section with the pipe diameter not less than 5-10 times is arranged between the electromagnetic flow meter (2) and the water supply pump set (1) at the front end, and a straight pipe section with the pipe diameter not less than 0-5 times is arranged between the electromagnetic flow meter and the tee joint (3) at the rear end.
5. The device for detecting the flow rate, the hydraulic pipeline strength and the pressure resistance of the fire monitor of the elevated fire fighting truck according to claim 1, wherein the three-way joint (3) is connected with the water inlet pipeline (13) of the pressure limiting valve (11) by adopting a plurality of DN80 interfaces.
6. The device for detecting the flow rate, the strength and the pressure resistance of the hydraulic pipeline of the fire monitor of the elevating fire truck according to claim 1, wherein the electric adjustable pressure test pump (8) adopts a piston type plunger pump, and provides pressure 2 times of the maximum working pressure of the hydraulic pipeline (9);
the electric adjustable pressure test pump (8) is provided with a pressure tapping (12) connected with the hydraulic pipeline (9).
7. The device for detecting the flow rate, the hydraulic pipeline strength and the pressure resistance of the fire monitor of the elevating fire truck according to claim 6, wherein the working pressure of the electric adjustable pressure test pump (8) is 0-6.0 MPa, and the working flow rate is 0-5L/s.
8. The device for detecting the flow rate, the hydraulic pipeline strength and the pressure resistance of the fire monitor of the elevated fire fighting truck according to claim 1, wherein the wireless control device (6) is a remote control terminal based on 4G and 5G.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010042662.0A CN111111055A (en) | 2020-01-15 | 2020-01-15 | Device for detecting flow of fire monitor of fire truck, strength of hydraulic pipeline and pressure resistance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010042662.0A CN111111055A (en) | 2020-01-15 | 2020-01-15 | Device for detecting flow of fire monitor of fire truck, strength of hydraulic pipeline and pressure resistance |
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| CN111111055A true CN111111055A (en) | 2020-05-08 |
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| CN202010042662.0A Pending CN111111055A (en) | 2020-01-15 | 2020-01-15 | Device for detecting flow of fire monitor of fire truck, strength of hydraulic pipeline and pressure resistance |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620998A (en) * | 2012-03-05 | 2012-08-01 | 中国石油大学(北京) | Device and method for pressure test and drainage tests for waved pipeline |
| CN202814801U (en) * | 2012-08-16 | 2013-03-20 | 天津市金达来工贸有限公司 | Water pressure detector |
| CN202939097U (en) * | 2012-10-31 | 2013-05-15 | 常州腾龙轻合金材料有限公司 | Fast blasting test machine for pipes |
| CN203417424U (en) * | 2013-05-27 | 2014-02-05 | 广东永强奥林宝国际消防汽车有限公司 | Pump and monitor test platform for fire-fighting truck |
| CN103868654A (en) * | 2014-03-31 | 2014-06-18 | 福建万昌消防产品检测有限公司 | Fire product test device |
| CN105699200A (en) * | 2016-03-31 | 2016-06-22 | 辽宁爱维尔铸业股份有限公司 | Self-locking water pressure testing device of large-diameter nodular graphite cast iron elbow pipe fitting |
| CN211835957U (en) * | 2020-01-15 | 2020-11-03 | 应急管理部上海消防研究所 | Device for detecting flow of fire monitor of fire truck, strength of hydraulic pipeline and pressure resistance |
-
2020
- 2020-01-15 CN CN202010042662.0A patent/CN111111055A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620998A (en) * | 2012-03-05 | 2012-08-01 | 中国石油大学(北京) | Device and method for pressure test and drainage tests for waved pipeline |
| CN202814801U (en) * | 2012-08-16 | 2013-03-20 | 天津市金达来工贸有限公司 | Water pressure detector |
| CN202939097U (en) * | 2012-10-31 | 2013-05-15 | 常州腾龙轻合金材料有限公司 | Fast blasting test machine for pipes |
| CN203417424U (en) * | 2013-05-27 | 2014-02-05 | 广东永强奥林宝国际消防汽车有限公司 | Pump and monitor test platform for fire-fighting truck |
| CN103868654A (en) * | 2014-03-31 | 2014-06-18 | 福建万昌消防产品检测有限公司 | Fire product test device |
| CN105699200A (en) * | 2016-03-31 | 2016-06-22 | 辽宁爱维尔铸业股份有限公司 | Self-locking water pressure testing device of large-diameter nodular graphite cast iron elbow pipe fitting |
| CN211835957U (en) * | 2020-01-15 | 2020-11-03 | 应急管理部上海消防研究所 | Device for detecting flow of fire monitor of fire truck, strength of hydraulic pipeline and pressure resistance |
Non-Patent Citations (1)
| Title |
|---|
| 程大章等: "智能建筑工程设计与实施", 30 November 2001, 同济大学出版社, pages: 326 - 327 * |
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