CN109141155B

CN109141155B - Liquid jet explosive treatment method

Info

Publication number: CN109141155B
Application number: CN201711069180.9A
Authority: CN
Inventors: 纪新刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-11-03
Filing date: 2017-11-03
Publication date: 2021-05-07
Anticipated expiration: 2037-11-03
Also published as: CN109141155A

Abstract

The invention relates to the technical field of explosive destruction, in particular to a water jet explosive treatment method. Classifying the types, sizes and shapes of explosives to be processed through the step 1); selecting different destroying modes according to the shape and the type of the explosive in the step 2); so as to relieve the technical problems existing in the prior art that the cutting process is influenced and dangerous due to the difference of the types and sizes of the explosives.

Description

Liquid jet explosive treatment method

Technical Field

The invention relates to the technical field of explosive destruction, in particular to a liquid jet explosive treatment method.

Background

A large amount of underground unearthed explosives, scrapped explosives, unexploded explosives on site and the like exist in the society, the existing treatment method generally adopts a mode of watching by a special storage person, the solution treatment is urgently needed along with the development of the society and the corrosion of the explosives, and the common treatment means is detonation and destruction, but the mode has the defects of site limitation, transportation danger, detonation operation danger, environmental pollution and the like.

And the liquid jet processing operation is adopted, so that the related risks and disadvantages are reduced, the field treatment such as the field treatment of the conditions of self-made bombs placed by terrorists, unexploded bombs in training fields, underground unearthed bombs and the like can be realized, and the liquid jet equipment can be used for carrying out the field treatment and destruction, so that the carrying risk is reduced, a proper field does not need to be searched for additional detonation, and unnecessary processes and troubles are reduced. And the liquid jet flow operation for destroying the waste explosives also reduces the danger and the environmental pollution.

However, in the current liquid jet operation, after positioning the explosive or explosive to be processed, the liquid cutting operation is directly performed on the explosive or explosive, so that the cutting process is affected and danger may be caused due to the difference of the type and size of the explosive.

Disclosure of Invention

The invention aims to provide a liquid jet explosive treatment method to relieve the technical problems in the prior art that the cutting process is influenced and danger can be caused due to different types and sizes of explosives.

The invention provides a liquid jet explosive treatment method, which comprises the following steps:

1) and (4) classification: dividing the types, sizes and shapes of explosives to be processed;

2) determining a destruction mode: selecting different destroying modes according to the shape and the type of the explosive;

3) preparation before operation: making a region isolation zone, placing a cutting tool at a designated position, connecting and debugging a matched pipeline and a control system, debugging equipment, and placing explosives into a positioning tool;

4) and (3) testing: after the equipment is debugged, performing an idle-load experiment to determine that the jet cutting head and the explosive do not touch each other around one circle, if the jet cutting head and the explosive cannot rotate for one circle smoothly, debugging again according to the step 3) until the operation is determined to be correct;

5) cutting operation: the liquid cutting equipment is connected with the cutting tool, the equipment is debugged by liquid, the liquid cutting equipment is started, the cutting tool is started to operate, and the operation is completed.

Further, in step 2), explosives with the diameter less than 200mm and the length less than 500mm can be destroyed by adopting the manner of rotating and cutting the explosives circularly.

Further, in the step 2), explosives with a diameter larger than 200mm and a length larger than 500mm can be destroyed in a mode that the explosives are surrounded by a fixed cutting tool.

Further, in step 3), when the explosive is put into the positioning tool, the cutting tool needs to be unloaded to determine whether the explosive installation position is accurate.

Further, in step 3), the target distance of the liquid jet cutting head of the cutting tool is 2-5 mm.

Further, in the step 3), the distance between the jet nozzle of the cutting tool and the explosive is less than 200 mm.

Further, at step 5), the liquid cutting apparatus comprises: the device comprises a liquid raw material supply device, a liquid pressurizing device and a conveying pipeline;

the liquid raw material supply device is used for supplying water or other liquid;

the liquid pressurizing device is communicated with the liquid raw material supply device;

one end of the conveying pipeline is communicated with the liquid pressurizing device, and the other end of the conveying pipeline is communicated with the cutting tool.

Further, at step 5), the liquid cutting apparatus further comprises: a solid abrasive supply device and a solid-liquid mixing device;

the solid abrasive feeding device is used for providing solid abrasives required by cutting operation;

the solid-liquid mixing device is respectively communicated with the liquid pressurizing device and the solid grinding material supply device, and the solid-liquid mixing device is used for mixing liquid and solid grinding materials according to a certain proportion.

Further, in step 2), when the explosive is internally provided with a liquid-reactive agent, the method cannot be adopted.

Further, in step 3), shelter protection is required if necessary; when the step 5) is finished, stopping the cutting tool and the liquid cutting equipment;

and after the liquid cutting equipment is completely shut down, the operator takes the explosive which is cut into the split bodies off from the positioning tool.

5) cutting operation: the liquid cutting equipment is connected with the cutting tool, the equipment is debugged by liquid, the liquid cutting equipment is started, the cutting tool is started to operate, and the operation is completed. Classifying the types, sizes and shapes of explosives to be processed through the step 1); selecting different destroying modes according to the shape and the type of the explosive in the step 2); so as to relieve the technical problems existing in the prior art that the cutting process is influenced and dangerous due to the difference of the types and sizes of the explosives.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a general flow diagram of a method for liquid jet explosives processing in accordance with an embodiment of the present invention;

fig. 2 is an overall work flow diagram of a liquid cutting device in a liquid jet explosive treatment method according to an embodiment of the invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 1 is an overall flowchart of a liquid jet explosive treatment method according to an embodiment of the present invention. As shown in fig. 1, the present invention provides a liquid jet explosive treatment method, which comprises the following steps:

In this embodiment, a method for processing liquid jet explosives includes the following steps:

On the basis of the above embodiment, further, in step 2), explosives with a diameter less than 200mm and a length less than 500mm can be destroyed by rotating and cutting the explosives circularly.

In this embodiment, after the difference of the type, size and shape of the explosives to be processed is performed in step 1), the explosives with a diameter smaller than 200mm and a length smaller than 500mm can be destroyed by rotating the explosives to be destroyed by cutting, and the small explosives can be rapidly processed by rotating the explosives to be destroyed by cutting.

On the basis of the above embodiment, further, in step 2), the explosives with a diameter larger than 200mm and a length larger than 500mm may be destroyed by surrounding with an explosive fixed cutting tool.

In this embodiment, after the difference of the type, size and shape of the explosives to be processed is performed in step 1), the explosives with a diameter larger than 200mm and a length larger than 500mm can be destroyed in a manner that the explosives are surrounded by a cutting tool without moving. Because, the physique of explosive is great, and the explosive adopts motionlessly, and the cutting frock encircles the explosive and cuts the processing to the explosive, can effectually avoid cutting the frock when encircleing the cutting around the explosive, and the cutting frock contacts with the explosive, reduces dangerous emergence, improves the safety of operation.

On the basis of the above embodiment, further, in step 3), when an explosive is put into the positioning tool, the cutting tool needs to be unloaded to determine whether the explosive installation position is accurate.

In this embodiment, the cutting frock carries out no-load operation, like this, can ensure the accuracy that the explosive position was laid to avoid the cutting frock in the operation in-process and the contact between the explosive, reduce the explosion danger.

On the basis of the embodiment, further, in the step 3), the target distance of the liquid jet cutting head of the cutting tool is 2-5 mm.

Wherein, the target distance refers to the distance between a jet flow outlet and the surface of a workpiece in the high-pressure liquid jet flow cutting process.

Since the target distance has a large influence on the jet cutting speed, the cutting speed initially remains constant and then decreases in a nearly linear relationship for each increment of the target distance. With a constant cutting speed, the target distance depends on the jet pressure and the nozzle diameter.

For the relationship between cutting speed and target distance, the kerf width, shape and kerf quality are greatly affected by the target distance. The kerf width increases with increasing target distance, with lower pressure jets occurring faster than higher pressure jets. During high pressure jet operation, the jet structure changes to create kerf shape and width changes. The jet flow does not diverge in the vicinity of the nozzle, the jet flow interacts with the material to damage the material in the axial direction and the radial direction, and as a result, a trapezoidal kerf with a long bottom edge is generated, and the bottom surface is stripped; the section taper angle of the cutting seam is reduced along with the increase of the target distance until the section taper angle is kept unchanged, and a rectangular cutting seam with a smooth edge is formed; because the extension of efflux, along with the further increase of target distance, the area of action of efflux to material increases, makes the kerf width grow, and kerf section shape has also become the trapezoidal shape of long limit at the top.

The change of the target distance has great influence on the cutting speed, the cutting quality, the cutting seam and the shape, and the determination of the optimal target distance depends on the basic parameters of the jet flow. When the jet flow is used for layer stripping operations such as cleaning and derusting, the target distance of the jet flow is larger than the optimal target distance during jet flow cutting, and the action area of the jet flow on materials is increased due to the fact that the target distance is properly increased, so that the speed of the operations such as cleaning is effectively increased.

In this embodiment, the liquid jet cutting head target distance of cutting frock is 2 ~ 5 mm. Because, the distance of liquid efflux cutting head distance work piece is little, and then, the impact force that the work piece surface received increases promptly to can effectually split the work piece shell, and then cut the whole fracture of explosive, in order to destroy the explosive.

On the basis of the above embodiment, further, in step 3), the distance between the jet nozzle of the cutting tool and the explosive must be less than 200 mm.

In this embodiment, the distance between the jet nozzle of the cutting tool and the explosive is less than 200mm, so that erosion force applied to the explosive is ensured, and the risk of explosion of the cavitation bubbles and electrostatic detonation caused by cavitation bubble effect and air turbulence electrostatic hazard formed by mixing and stirring peripheral air by jet flow can be avoided.

Fig. 2 is an overall work flow diagram of a liquid cutting device in a liquid jet explosive treatment method according to an embodiment of the invention. As shown in fig. 2, on the basis of the above embodiment, further, at step 5), the liquid cutting apparatus includes: the device comprises a liquid raw material supply device, a liquid pressurizing device and a conveying pipeline;

In this embodiment, when waiting the explosive of cutting only through rivers when cutting, liquid raw materials feeding mechanism, liquid supercharging device and pipeline communicate in proper order, liquid supercharging device is used for carrying out the pressure boost with liquid, in order to guarantee that liquid pressure boost to user demand's pressure and flow pipeline's one end and cutting frock intercommunication, liquid raw materials feeding mechanism and liquid supercharging device simultaneous working carry out the pressure boost with liquid and handle, carry the pressure boost liquid to the cutting frock by pipeline and cut in order to treat the explosive of cutting.

On the basis of the above embodiment, further, in step 5), the liquid cutting apparatus further includes: a solid abrasive supply device and a solid-liquid mixing device;

In this embodiment, the liquid cutting apparatus further includes: a solid abrasive supply device and a solid-liquid mixing device; the solid abrasive feeding device is used for providing solid abrasives required by cutting operation; the solid-liquid mixing device is respectively communicated with the liquid pressurizing device and the solid grinding material supply device, and the solid-liquid mixing device is used for mixing liquid and solid grinding materials according to a certain proportion, so that the cutting efficiency of the cutting tool can be increased by arranging the solid grinding material supply device and the solid-liquid mixing device.

In addition to the above embodiment, in step 2), when the explosive is internally provided with a liquid-reactive agent, the method cannot be adopted.

In this example, in the classification of explosives in step 1): classifying the types, sizes and shapes of explosives to be processed, and 2) determining a destruction mode: in the process of selecting different destruction methods according to the shape and type of the explosive, when the explosive is found to be internally used with a chemical that reacts with the liquid, the explosive needs to be cut in the process of processing the explosive, and the liquid needs to be used in the cutting process, so when the explosive is found to be internally used with a chemical that reacts with the liquid, the explosive of the series needs to be separately handled.

On the basis of the above embodiment, further, in step 3), shelter protection is required if necessary; when the step 5) is finished, stopping the cutting tool and the liquid cutting equipment;

In the embodiment, in the step 3), shelter protection is required if necessary to protect the life safety of workers, and when the step 5) is completed, the cutting tool and the liquid cutting equipment are shut down; after the liquid cutting equipment is confirmed to be completely shut down, the operator takes the explosive which is cut into the split bodies off the positioning tool to guarantee the life safety of the operator, then the liquid jet equipment, the tool and the like are evacuated from the field, and the liquid in the liquid jet equipment is emptied or other medicaments are processed.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method of liquid jet explosives processing comprising the steps of:

5) cutting operation: connecting a liquid cutting device with a cutting tool, debugging the device by introducing liquid, starting the liquid cutting device, starting the cutting tool to operate, and finishing the operation;

in the step 2), explosives with the diameter less than 200mm and the length less than 500mm are destroyed by rotating and cutting the explosives;

in the step 2), the explosives with the diameter larger than 200mm and the length larger than 500mm are destroyed in a mode that the explosives are surrounded by an explosive fixed cutting tool.

2. A liquid jet explosives processing method of claim 1 wherein in step 3) when explosives are placed into the positioning tooling, the cutting tooling needs to be unloaded to determine if the explosives mounting location is accurate.

3. The liquid jet explosive treatment method according to claim 1, wherein in the step 3), the target distance of the liquid jet cutting head of the cutting tool is 2-5 mm.

4. The liquid jet explosives processing method of claim 1 wherein in step 3) the distance between the jet nozzle of the cutting tool and the explosives is less than 200 mm.

5. A liquid jet explosives processing method in accordance with claim 1 wherein, at step 5), the liquid cutting apparatus comprises: the device comprises a liquid raw material supply device, a liquid pressurizing device and a conveying pipeline;

6. The liquid jet explosives processing method of claim 1 wherein at step 5) the liquid cutting apparatus further comprises: a solid abrasive supply device and a solid-liquid mixing device;

7. The liquid jet explosives processing method of claim 1 wherein in step 2) when the explosive is internally of a liquid reactive agent, then the method cannot be used.

8. The liquid jet explosives processing method of claim 1 wherein in step 3), shelter protection is done; when the step 5) is finished, stopping the cutting tool and the liquid cutting equipment;