CN202658192U - Strain strengthening pressure increasing device for austenitic stainless steel low-temperature container - Google Patents
Strain strengthening pressure increasing device for austenitic stainless steel low-temperature container Download PDFInfo
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- CN202658192U CN202658192U CN 201220247646 CN201220247646U CN202658192U CN 202658192 U CN202658192 U CN 202658192U CN 201220247646 CN201220247646 CN 201220247646 CN 201220247646 U CN201220247646 U CN 201220247646U CN 202658192 U CN202658192 U CN 202658192U
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- pressurizing device
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Abstract
The utility model discloses a strain strengthening pressure increasing device for an austenitic stainless steel low-temperature container. The pressure increasing device comprises a pressure increasing device body, a deformation sensor arranged on the container to be processed, a frequency converter, a measurement and control signal processor and a computer, wherein the pressure increasing device body applies pressure to the container to be processed; the deformation sensor transmits a detected deformation signal to the measurement and control signal processor for processing and transmits the processed signal to the computer; and the computer compares the processed signal with an acquired signal according to processing control software, sends a control signal, controls the frequency converter to be started and stopped and an electric stop valve to be opened and closed through the measurement and control signal processor, controls the pressure increasing device body to perform pressure increasing and maintaining operation through the frequency converter, and performs pressure relief operation by opening an electric stop valve for pressure relief. Perimeter and axial length change sensors are used for monitoring the deformation of a plurality of parts, so that the container to be processed can be subjected to 1 to 10 percent of plastic deformation according to the process requirement, and the aim of strain strengthening is fulfilled.
Description
Technical field
The utility model relates to austenitic stainless steel low-temperature (low temperature) vessel manufacture field, relates to simultaneously the industry automatic control technical field, belongs to the automatic processing technology category of equipment.
Background technology
Being used for the container of storing cryogenic fluids is called low-temperature (low temperature) vessel, and the austenitic stainless steel low-temperature performance is good, can be used for making low-temperature pressure container.Simultaneously, austenitic stainless steel itself also has significant low temperature strain hardening characteristic.So-called strain hardening characteristic is to bear one greater than yield strength R when austenitic stainless steel
P0.2Tensile stress σ
kThe time, can produce permanent viscous deformation after the unloading; When again loading, at stress less than σ
kIn the scope, stress-strain keeps elasticity to increase, and has been equivalent to increase the low temperature intensity of material.Compare with conventional design method, adopt strain hardening technical project austenitic stainless steel low-temperature (low temperature) vessel inner jar, can reduce the Vessel Design wall thickness, alleviate container weight, reduce weight capacity ratio, reduce the energy consumption in container manufacturing and the transportation.Strain hardening austenitic stainless steel low-temperature (low temperature) vessel will make the container generation of welding well be no more than 10% permanent plastic deformation with highly pressurised liquid in shaping and strengthening process, and excessive permanent plastic deformation can cause the low-temperature (low temperature) vessel performance to be difficult to the requirement of satisfied be correlated with manufacturing and examination criteria.The problem that present this type of low-temperature (low temperature) vessel of production is run into is: because low-temperature (low temperature) vessel has stiffening web, perforate or other discontinuous constructions, so that container each several part when strain hardening is difficult to produce uniform deflection, thereby cause quality product to be difficult to control, or want the expensive time to control quality, cause that production efficiency descends, production cost rises.
Summary of the invention
The purpose of this utility model is in order to solve the problems of the technologies described above, a kind of austenitic stainless steel low-temperature (low temperature) vessel strain hardening pressurizing device to be provided, can guarantee low-temperature (low temperature) vessel strain hardening processing quality, avoiding the human operational error.
The purpose of this utility model is achieved through the following technical solutions:
A kind of austenitic stainless steel low-temperature (low temperature) vessel strain hardening pressurizing device, comprise pressurizing device, be added in deformation-sensor and frequency transformer on the container to be processed, measure and control signal treater and computer, described pressurizing device is sent pressure into container to be processed, deformation-sensor sends the deformation signal that detects to measurement and the control signal treater is processed, then be transferred to computer, computer is according to the machining control software that stores in advance, the signal that relatively collects, then send control signal, through measuring and the control signal treater, control respectively the switch of frequency transformer and electric check valve, pressurize by the Frequency Converter Control pressurizing device, the pressurize operation is carried out the pressure release operation by the electric check valve of opening pressure release.
Preferably, described sensor comprises 3 perimeter change sensors, loads on the circumference of container to be processed, and 1 axial length change sensor, loads on the two axial ends of container to be processed.
Preferably, described tensimeter comprises pointer tensimeter and electric contact point pressure gauge.
Preferably, the pipeline between described driven high voltage water pump and the container to be processed is provided with surplus valve, under meter, electric check valve, temperature transmitter, pressure sensing transmitter and tensimeter; The signal that described under meter, temperature transmitter, pressure sensing transmitter and electric contact point pressure gauge detect all after measurement and the processing of control signal treater, is inputted computer.
Preferably, described pressurizing device is the driven high voltage water pump, and this water pump is directly sent into container to be processed after with process water or tap water rising pressure.
Preferably, the flow of driven high voltage water pump is by Frequency Converter Control.
Preferably, the pipelining of pressurizing device has check valve, is used for preventing that liquid from flowing backwards.
A kind of austenitic stainless steel low-temperature (low temperature) vessel strain hardening pressure method comprises the steps:
(1) starts the driven high voltage water pump, behind the clear water process driven high voltage water pump rising pressure, by the under meter metering, be admitted to container to be processed, make it produce viscous deformation;
(2) being carried in deformation-sensor on the container to be processed sends the signal that detects to and measures and the control signal treater is processed, then be transferred to computer, computer is according to the machining control software that stores in advance, the signal that relatively collects, then send control signal, this control signal is after measurement and the processing of control signal treater, the output frequency of control frequency transformer and the switch of electric check valve, start or stop the driven high voltage water pump, change the output flow of driven high voltage water pump, realization is boosted, the pressurize operation; By the computer program automatic operation, open the electric check valve of pressure release, realize the pressure release operation.
Preferably, when driven high voltage exit of pump pressure superpressure, by the surplus valve quick pressure releasing, thus the safety of protection driven high voltage water pump and container to be processed.
Preferably, when the internal pressure of container to be processed during greater than predetermined pressure, electric contact point pressure gauge action, quick acting switching-off driven high voltage water pump power power supply stops the driven high voltage pump working, protects the safety of container to be processed.
Preferably, when 3 girth deflections of container to be processed and wherein any one of 1 axial length deflection reach set(ting)value (numerical value of container material intensity regulation), pressurizing device namely stops pressurization automatically, is carried out in accordance with regulations the pressurize operation, then begins releasing pressure automatically by the pressure release curve.
The utility model compared with prior art has following advantage:
1. adopt the driven high voltage water pump as pressurizing device, saved hydraulic pulldown and hydraulic efficiency system, stopped to pollute in the oil leakage entry possibility of container to be processed, greatly simplified the structure of pressurizing device, greatly improved reliability.
2. by the flow of Frequency Converter Control driven high voltage water pump, save electric control valve, can realize the energy-saving run of high-pressure hydraulic pump, improved simultaneously control accuracy.
3. by computer, measurement and control signal treater and machining control software with pid control function, can automatically control pressurizing device work.
4. adopt 2 or a plurality of container perimeter change sensor and one or more container axial length change sensor, monitor the deflection at a plurality of positions, to guarantee the strain hardening processing quality.
5. adopt electric contact point pressure gauge can protect the safety of this pressurizing device and low-temperature (low temperature) vessel to be processed.
6. the utility model can make container to be processed by the viscous deformation of processing requirement generation 1 ~ 10%, reaches the purpose of strain hardening.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The driven high voltage water pump is chosen the 3DY-1150/15 model, and the pointer tensimeter is chosen the Y-100 model that range is 0-16MPa, and it is 0.6-6m that under meter is chosen range
3The one-piece type magnetic flow meter of/h, the pressure sensing transmitter is chosen the KLGK-3151 model that range is 0-16MPa, surplus valve is selected the A41Y-100P model, the first electric check valve is selected the magnetic valve of PN16DN25 specification, the second electric check valve is selected the magnetic valve of PN16DN15 specification, the 3rd electric check valve is selected the magnetic valve of PN16DN20 specification, check valve is chosen the H11T-16K model, electric contact point pressure gauge is chosen the YTX-150 model of range 0-16MPa, temperature transmitter is chosen the KZW-KPt-3-A-2 model, and hand stop valve is chosen the J11T-16K model.Perimeter change sensor and axial length sensor are chosen the KTF model, and measurement and control signal treater are selected siemens CPU313C series of PLC and functional module thereof, and frequency transformer is selected the 15KW of Mitsubishi heavy duty three phase converter.Austenite stainless steel container 13 volume 5m to be processed
3
Embodiment 1
A kind of austenitic stainless steel low-temperature (low temperature) vessel of the utility model strain hardening pressurizing device, as shown in Figure 1, comprise driven high voltage water pump 2, axial length change sensor 15, three perimeter change sensors 14, frequency transformer 19, measurement and control signal treaters 17 and computer 18, described perimeter change sensor 14 loads on container 13(austenite stainless steel container to be processed) circumference on, axial length change sensor 15 loads on the two axial ends of container 13 to be processed.
Pipeline between described driven high voltage water pump 2 and the container to be processed 13 is provided with pressure sensing transmitter 5, the first electric check valve 7, check valve 8, electric contact point pressure gauge 9, pointer tensimeter 3, temperature transmitter 10, under meter 4 and surplus valve 6; The signal that described under meter 4, temperature transmitter 10 and electric contact point pressure gauge 9, pressure sensing transmitter 5 detect all after measurement and 17 processing of control signal treater, is inputted computer 18.The flow of driven high voltage water pump 2 is by frequency transformer 19 controls.Described driven high voltage water pump 2 raises tap water and directly sends into container 13 to be processed behind the pressure, make it produce viscous deformation, axial length change sensor 15 and perimeter change sensor 14 send the deformation signal that detects to measurement and control signal treater 17 is processed, then be transferred to computer 18, computer 18 is according to the machining control software that stores in advance, the signal that relatively collects, then send control signal, through measuring and control signal treater 17, control respectively the switch of frequency transformer 19 and the first electric check valve 7, by Frequency Converter Control driven high voltage water pump 2 start or stop pressurize, the pressurize operation is carried out the pressure release operation by the second electric check valve 11 of opening pressure release.
The pressure method of above-mentioned pressurizing device is as follows:
(1) the pressurization of container to be processed, pressurize, the pressure release machining control software computer of packing into, then the amenable to process indication operates.
(2) at first open the first electric check valve 7 and the 3rd electric check valve 16, then start driven high voltage water pump 2, behind the clear water process driven high voltage water pump rising pressure, by under meter metering 4, be admitted to container 13 to be processed; Clear water is discharged the air in the container to be processed by the 3rd electric check valve, Bas Discharged is complete, closes the 3rd electric check valve; The high pressure clear water just makes container to be processed produce viscous deformation.
(3) being carried in deformation-sensor on the container to be processed sends the signal that detects to and measures and the control signal treater is processed, then be transferred to computer, computer is according to the machining control software that stores in advance, the signal that relatively collects, then send control signal, this control signal is after measurement and the processing of control signal treater, open or close the first electric check valve 7, and the output frequency of control frequency transformer 19, starting or stoping the driven high voltage water pump, to change the output flow of driven high voltage water pump, thereby realize boost operations, pressurize operation; By the computer program automatic operation, open the second electric check valve 11, realize the pressure release operation.When driven high voltage exit of pump pressure superpressure, by surplus valve 6 quick pressure releasing.When the internal pressure of container to be processed during greater than predetermined pressure, electric contact point pressure gauge 9 actions, quick acting switching-off driven high voltage water pump power power supply stops the driven high voltage pump working.By aforesaid operations, can make container to be processed by the viscous deformation of processing requirement generation 5%, reach the purpose of strain hardening.
Claims (6)
1. austenitic stainless steel low-temperature (low temperature) vessel strain hardening pressurizing device, it is characterized in that, comprise pressurizing device, be added in deformation-sensor and frequency transformer on the container to be processed, measure and control signal treater and computer, described pressurizing device is sent pressure into container to be processed, deformation-sensor sends the deformation signal that detects to measurement and the control signal treater is processed, then be transferred to computer, computer is according to machining control software, the signal that relatively collects, then send control signal, through measuring and the control signal treater, control respectively the switch of frequency transformer and electric check valve, pressurize by the Frequency Converter Control pressurizing device, the pressurize operation is carried out the pressure release operation by the electric check valve of opening pressure release.
2. pressurizing device according to claim 1 is characterized in that, described sensor comprises 3 perimeter change sensors, loads on the circumference of container to be processed, and 1 axial length change sensor, loads on the two axial ends of container to be processed.
3. pressurizing device according to claim 1 and 2 is characterized in that, described tensimeter comprises pointer tensimeter and electric contact point pressure gauge.
4. pressurizing device according to claim 3 is characterized in that, the pipeline between described driven high voltage water pump and the container to be processed is provided with surplus valve, under meter, electric check valve, temperature transmitter, pressure sensing transmitter and tensimeter; The signal that described under meter, temperature transmitter, pressure sensing transmitter and electric contact point pressure gauge detect all after measurement and the processing of control signal treater, is inputted computer.
5. pressurizing device according to claim 4 is characterized in that, described pressurizing device is the driven high voltage water pump.
6. pressurizing device according to claim 5 is characterized in that, the flow of described driven high voltage water pump is by Frequency Converter Control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220247646 CN202658192U (en) | 2012-05-29 | 2012-05-29 | Strain strengthening pressure increasing device for austenitic stainless steel low-temperature container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220247646 CN202658192U (en) | 2012-05-29 | 2012-05-29 | Strain strengthening pressure increasing device for austenitic stainless steel low-temperature container |
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| Publication Number | Publication Date |
|---|---|
| CN202658192U true CN202658192U (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220247646 Expired - Fee Related CN202658192U (en) | 2012-05-29 | 2012-05-29 | Strain strengthening pressure increasing device for austenitic stainless steel low-temperature container |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102703663A (en) * | 2012-05-29 | 2012-10-03 | 华南理工大学 | Strain strengthening pressure device and pressure method for austenitic stainless steel low-temperature vessel |
| CN103276171A (en) * | 2013-05-28 | 2013-09-04 | 浙江大学 | Method for determining strain strengthening pressure maintaining completion time of austenitic stainless steel low-temperature container |
| CN109307623A (en) * | 2018-11-20 | 2019-02-05 | 霍山嘉远智能制造有限公司 | A kind of large-caliber stainless steel container pressure test device and strain measurement method |
-
2012
- 2012-05-29 CN CN 201220247646 patent/CN202658192U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102703663A (en) * | 2012-05-29 | 2012-10-03 | 华南理工大学 | Strain strengthening pressure device and pressure method for austenitic stainless steel low-temperature vessel |
| CN103276171A (en) * | 2013-05-28 | 2013-09-04 | 浙江大学 | Method for determining strain strengthening pressure maintaining completion time of austenitic stainless steel low-temperature container |
| CN103276171B (en) * | 2013-05-28 | 2015-02-25 | 浙江大学 | Method for determining strain strengthening pressure maintaining completion time of austenitic stainless steel low-temperature container |
| CN109307623A (en) * | 2018-11-20 | 2019-02-05 | 霍山嘉远智能制造有限公司 | A kind of large-caliber stainless steel container pressure test device and strain measurement method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20150529 |
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| EXPY | Termination of patent right or utility model |