CN105563349A - Abrasive concentration control system for front mixed abrasive water jet equipment - Google Patents
Abrasive concentration control system for front mixed abrasive water jet equipment Download PDFInfo
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- CN105563349A CN105563349A CN201610052131.3A CN201610052131A CN105563349A CN 105563349 A CN105563349 A CN 105563349A CN 201610052131 A CN201610052131 A CN 201610052131A CN 105563349 A CN105563349 A CN 105563349A
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- Prior art keywords
- abrasive
- concentration
- proportional flow
- flow valve
- valve
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
- B24C7/0015—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
The invention discloses an abrasive concentration control system for front mixed abrasive water jet equipment. The system comprises a bypass proportional flow valve, a main way proportional flow valve, a high-pressure water pump, a control module, a high-pressure tank, a ball valve, an ultrasonic concentration detector and a nozzle. Water supply of the high-pressure tank is controlled by the bypass proportional flow valve; water supply of the nozzle is controlled by the main way proportional flow valve; a concentration value of a mixed abrasive is detected through the ultrasonic concentration detector, and is returned to a control module; and the control module performs contrastive analysis for the concentration value and a set value, sends signals to the bypass proportional flow valve and the main way proportional flow valve to adjust the openness, and adjusts the water supply quantity ratio of the bypass proportional flow valve and the main way proportional flow valve to finish closed-loop control of abrasive concentration. The system realizes high-precision control of the abrasive concentration of a front mixed abrasive jet cutting system, improves the abrasive utilization rate and the cutting efficiency, and fills the blank of traditional technology.
Description
Technical field
The present invention relates to Abrasive Water Jet Machining field, particularly a kind of abrasive concentration control system for front mixing abrasive Water jet equipment.
Background technology
The feature of Abrasive Water Jet Machining is the class high-pressure spray being mixed into the stone solid particle of quartz sand, diamond dust, garnet, haydite etc. and being formed in pure water jets.Its incision principle impacts material to be cut surface after abrasive material is accelerated by nozzle, utilizes abrasive grain to realize cutting to the erosion effect of material.Under equal pressure condition, the cutting power of abradant jet substantially exceeds pure water jets.
Abrasive water-jet is divided into front mixing and rear hybrid two classes usually.Rear mixing abrasive jet stream is under the effect of driving force pressure, aqueous medium forms high-speed water jet by first nozzle, and in hybrid chamber, produce certain vacuum, make to form certain pressure differential between abrasive material case and hybrid chamber, abrasive material enters hybrid chamber by pneumatic transportation under the acting in conjunction of deadweight and pressure differential, and with water jet, violent turbulent fluctuation diffusion and blending occurs.Abrasive water-jet is formed again by second nozzle (abrasive jet).Its shortcoming is that the mixing of solid-liquid medium is undesirable, and cutting pressure is high.Front mixing abrasive jet stream is before high-pressure water jet is formed, and by abrasive particle, first and water Homogeneous phase mixing in high-pressure hydraulic pipe-line, is then mixed further by (operating) water nozzle and accelerate, and forms abrasive water-jet.Abrasive material tentatively mixes in abrasive material case with water, makes abrasive material be in quasi-liquid fluidized state in abrasive material case.Front mixing abrasive jet stream has the cutting power of great potential, can cut the hard material such as steel and armored concrete at low pressures.Under identical cutting power, after pressure ratio required for front mixing abrasive jet stream, mixing abrasive jet stream is low many.
At present, the Premixed Abrasive Water Jet has been applied in offshore oil platform and has removed, and jacket cuts, piling bar cutting under water, in the application of the scene such as submarine pipeline cutting.It has the plurality of advantages such as cost is low, safe and reliable, environmental pollution, good cutting effect, more and more receives the concern of people.In Abrasive Water Jet Machining process, along with the carrying out of cutting, abrasive material can consume gradually, the reduction of abrasive concentration, and can directly cause cut quality to decline, abrasive material utilizes insufficient, and cutting efficiency reduces greatly.And abrasive material front mixing device of the prior art is by carrying out manual adjustment to the pro rate of pressure pan and high-pressure water pipe two-way output thus regulating abrasive concentration, cannot ensure that feeding abrasive material is continuous, abrasive concentration value cannot keep constant, and manual operation cannot accomplish fine adjustment.Therefore, the present invention proposes a kind of abrasive concentration control system for front mixing abrasive Water jet equipment.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of abrasive concentration control system for front mixing abrasive Water jet equipment.
A kind of abrasive concentration control system for front mixing abrasive Water jet equipment of the present invention, comprising: bypass ratio flow valve, main road proportional flow control valve, high-pressure hydraulic pump, control module, pressure pan, ball valve, ultrasonic wave concentration surveymeter, nozzle.
The water supply of pressure pan is controlled by bypass ratio flow valve, the water supply of nozzle is controlled by main road proportional flow control valve, the mixed concentration value of abrasive material is detected by ultrasonic wave concentration surveymeter, then this value is fed back in control module, this concentration value and setting value are analyzed by control module, respectively signal is sent to bypass ratio flow valve and main road proportional flow control valve, regulate its aperture, regulate the ratio of the output of bypass ratio flow valve and main road proportional flow control valve, thus complete the closed-loop control to abrasive concentration.
Ultrasonic wave concentration surveymeter described in a kind of abrasive concentration control system for front mixing abrasive Water jet equipment, it is characterized in that: use external clamping ultrasonic wave densimeter to realize detecting the mixed abrasive concentration of abrasive material, non-cpntact measurement, without Abrasive Scouring loss, reliability and durability.
For front mixing abrasive Water jet equipment abrasive concentration control system described in bypass ratio flow valve and a main road proportional flow control valve, it is characterized in that: signal of telecommunication instruction can be accepted, continuous control water supply flow.
Concrete steps are as follows:
(1) water supply of pressure pan is controlled by bypass ratio flow valve, and the water supply of nozzle is controlled by main road proportional flow control valve.
(2) the rear ducted abrasive concentration of abrasive material mixing is detected, by this concentration value Real-time Feedback to control module with ultrasonic wave concentration surveymeter;
(3) this concentration value and setting value are analyzed by control module;
(4) molding block sends aperture conditioning signal respectively to bypass ratio flow valve and main road proportional flow control valve, regulates its aperture, the ratio of the output of adjustment bypass ratio flow valve and main road proportional flow control valve, thus completes the closed-loop control to abrasive concentration.
The present invention's beneficial effect compared with prior art:
A kind of abrasive concentration control system for front mixing abrasive Water jet equipment, controlled by the aperture of control module to bypass ratio flow valve and main road proportional flow control valve, thus indirectly control the water supply of pressure pan and the water supply of nozzle, abrasive concentration is made to realize automatically regulating, keep constant, response time is short, achieve and the high accuracy of front mixing abrasive jet stream diced system abrasive concentration is controlled, thus further ensure cut quality, improve abrasive material utilization rate and cutting efficiency, fill up the blank of prior art.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described.
Fig. 1 is the block diagram of abrasive concentration control system in the present invention.
In figure, each symbol represents that implication is as follows:
1 bypass ratio flow valve, 2 main road proportional flow control valves, 3 high-pressure hydraulic pumps, 4 control modules, 5 pressure pans, 6 ball valves, 7 ultrasonic wave concentration surveymeters, 8 nozzles.
Detailed description of the invention
Form by the following examples; content of the present invention is described in further detail; but should not be interpreted as that the scope of theme of the present invention is only limitted to following embodiment at this point; without departing from the idea case in the present invention described above; all make according to ordinary skill knowledge and customary means various amendments, replacement and change, include within protection scope of the present invention.
Fig. 1 is the block diagram of abrasive concentration control system in the present invention, a kind of abrasive concentration control system for front mixing abrasive Water jet equipment of the present invention, comprise: bypass ratio flow valve 1, main road proportional flow control valve 2, high-pressure hydraulic pump 3, control module 4, pressure pan 5, ball valve 6, ultrasonic wave concentration surveymeter 7, nozzle 8.
The water supply of pressure pan is controlled by bypass ratio flow valve 1, the water supply of nozzle is controlled by main road proportional flow control valve 2, the mixed concentration value of abrasive material is detected by ultrasonic wave concentration surveymeter 7, then this value is fed back in control module 4, this concentration value and setting value are analyzed by control module 4, respectively signal is sent to bypass ratio flow valve 1 and main road proportional flow control valve 2, regulate its aperture, regulate the ratio of the output of bypass ratio flow valve 1 and main road proportional flow control valve 2, thus complete the closed-loop control to abrasive concentration.
Ultrasonic wave concentration surveymeter 7 described in a kind of abrasive concentration control system for front mixing abrasive Water jet equipment, it is characterized in that: use external clamping ultrasonic wave densimeter to realize detecting the mixed abrasive concentration of abrasive material, non-cpntact measurement, without Abrasive Scouring loss, reliability and durability.
Bypass ratio flow valve 1 described in a kind of abrasive concentration control system for front mixing abrasive Water jet equipment and main road proportional flow control valve 2, is characterized in that: can accept signal of telecommunication instruction, continuous control water supply flow.
Concrete steps are as follows:
(1) water supply of pressure pan is controlled by bypass ratio flow valve 1, and the water supply of nozzle is controlled by main road proportional flow control valve 2.
(2) the rear ducted abrasive concentration of abrasive material mixing is detected, by this concentration value Real-time Feedback to control module 4 with ultrasonic wave concentration surveymeter 7.
(3) this concentration value and setting value are analyzed by control module 4;
(4) control module 4 pairs of bypass ratio flow valves 1 and main road proportional flow control valve 2 send aperture conditioning signal respectively, regulate its aperture, the ratio of the output of adjustment bypass ratio flow valve 1 and main road proportional flow control valve 2, thus complete the closed-loop control to abrasive concentration.
When abrasive water-jet is applied to different operating mode, operating personnel only need reset the theoretical abrasive concentration value in control module, whole operating process full automation operation, ensure the automatic adjustment of abrasive concentration thus keep it constant, response time is short, achieves and controls the high accuracy of front mixing abrasive jet stream diced system abrasive concentration, thus further ensure cut quality, improve abrasive material utilization rate and cutting efficiency, fill up the blank of prior art.
Claims (3)
1. a kind of abrasive concentration control system for front mixing abrasive Water jet equipment of the present invention, comprising: bypass ratio flow valve 1, main road proportional flow control valve 2, high-pressure hydraulic pump 3, control module 4, pressure pan 5, ball valve 6, ultrasonic wave concentration surveymeter 7, nozzle 8; The water supply of pressure pan is controlled by bypass ratio flow valve 1, the water supply of nozzle is controlled by main road proportional flow control valve 2, the mixed concentration value of abrasive material is detected by ultrasonic wave concentration surveymeter 7, then this value is fed back in control module 4, this concentration value and setting value are analyzed by control module 4, respectively signal is sent to bypass ratio flow valve 1 and main road proportional flow control valve 2, regulate its aperture, regulate the ratio of the output of bypass ratio flow valve 1 and main road proportional flow control valve 2, thus complete the closed-loop control to abrasive concentration.
2. the ultrasonic wave concentration surveymeter 7 described in a kind of abrasive concentration control system for front mixing abrasive Water jet equipment according to claim 1, it is characterized in that: use external clamping ultrasonic wave densimeter to realize detecting the mixed abrasive concentration of abrasive material, non-cpntact measurement, without Abrasive Scouring loss, reliability and durability.
3. the bypass ratio flow valve 1 described in a kind of abrasive concentration control system for front mixing abrasive Water jet equipment according to claim 1 and main road proportional flow control valve 2, is characterized in that: can accept signal of telecommunication instruction, continuous control water supply flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610052131.3A CN105563349A (en) | 2016-01-27 | 2016-01-27 | Abrasive concentration control system for front mixed abrasive water jet equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610052131.3A CN105563349A (en) | 2016-01-27 | 2016-01-27 | Abrasive concentration control system for front mixed abrasive water jet equipment |
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| CN105563349A true CN105563349A (en) | 2016-05-11 |
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| CN201610052131.3A Pending CN105563349A (en) | 2016-01-27 | 2016-01-27 | Abrasive concentration control system for front mixed abrasive water jet equipment |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107953272A (en) * | 2017-11-30 | 2018-04-24 | 无锡市日升机械厂 | Abrasive concentration is adjustable distribution type liquid sandblasting machine |
| CN108655959A (en) * | 2018-04-20 | 2018-10-16 | 合肥通用机械研究院有限公司 | A kind of deep-sea forcible entry device |
| CN108687671A (en) * | 2018-04-20 | 2018-10-23 | 合肥通用机械研究院有限公司 | A kind of cutter device for deep-sea forcible entry |
| CN110125814A (en) * | 2019-05-31 | 2019-08-16 | 中国平煤神马能源化工集团有限责任公司 | A kind of continuous automatic supplier of the abrasive material of voltage stabilization and current stabilization |
| CN112428161A (en) * | 2020-11-18 | 2021-03-02 | 安徽信息工程学院 | Pre-mixed abrasive jet abrasive concentration monitoring system and monitoring method thereof |
| CN113276027A (en) * | 2021-06-24 | 2021-08-20 | 中国铁建重工集团股份有限公司 | Abrasive jet control system |
| CN114217579A (en) * | 2021-11-30 | 2022-03-22 | 武汉大学 | System and method for dynamically adjusting high polymer for grinding steel rail by abrasive water jet |
| US11511392B2 (en) * | 2017-03-31 | 2022-11-29 | Ant Applied New Technologies Ag | Water abrasive suspension cutting system and method for water abrasive suspension cutting |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11511392B2 (en) * | 2017-03-31 | 2022-11-29 | Ant Applied New Technologies Ag | Water abrasive suspension cutting system and method for water abrasive suspension cutting |
| CN107953272A (en) * | 2017-11-30 | 2018-04-24 | 无锡市日升机械厂 | Abrasive concentration is adjustable distribution type liquid sandblasting machine |
| CN108655959A (en) * | 2018-04-20 | 2018-10-16 | 合肥通用机械研究院有限公司 | A kind of deep-sea forcible entry device |
| CN108687671A (en) * | 2018-04-20 | 2018-10-23 | 合肥通用机械研究院有限公司 | A kind of cutter device for deep-sea forcible entry |
| CN108687671B (en) * | 2018-04-20 | 2020-09-01 | 合肥通用机械研究院有限公司 | Cutting device for deep sea forcible entry |
| CN110125814A (en) * | 2019-05-31 | 2019-08-16 | 中国平煤神马能源化工集团有限责任公司 | A kind of continuous automatic supplier of the abrasive material of voltage stabilization and current stabilization |
| CN110125814B (en) * | 2019-05-31 | 2020-10-27 | 中国平煤神马能源化工集团有限责任公司 | Continuous automatic abrasive feeding device with stable voltage and stable flow |
| CN112428161A (en) * | 2020-11-18 | 2021-03-02 | 安徽信息工程学院 | Pre-mixed abrasive jet abrasive concentration monitoring system and monitoring method thereof |
| CN113276027A (en) * | 2021-06-24 | 2021-08-20 | 中国铁建重工集团股份有限公司 | Abrasive jet control system |
| CN114217579A (en) * | 2021-11-30 | 2022-03-22 | 武汉大学 | System and method for dynamically adjusting high polymer for grinding steel rail by abrasive water jet |
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Application publication date: 20160511 |