CN105065902B - Detection system for opening tension of tank safety valve in non-disassembly state - Google Patents
Detection system for opening tension of tank safety valve in non-disassembly state Download PDFInfo
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- CN105065902B CN105065902B CN201510482545.5A CN201510482545A CN105065902B CN 105065902 B CN105065902 B CN 105065902B CN 201510482545 A CN201510482545 A CN 201510482545A CN 105065902 B CN105065902 B CN 105065902B
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- groove tank
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Abstract
The invention discloses a detection system for opening tension of a tank safety valve in a non-disassembly state. An explosion-proof sleeve, a main sleeve and a support sleeve are connected in sequence in a sealing manner. A motor is sleeved with the explosion-proof sleeve, and the motor and a coupling shaft sleeve are coaxially mounted. The coupling shaft sleeve is provided with a screw nut, and the screw nut is sleeved at the inner end of a screw to form a screw pair. A stepped shaft with a screw thread is arranged at the outer end of the screw and extends into the support sleeve, and the screw and the support sleeve are coaxially mounted. The outer end of the screw is sleeved to a connecting sleeve through the screw thread, and the connecting sleeve is sleeved to the top of the safety valve. A gas output port is formed in the side part of the main sleeve. The detection system further comprises a PC computer and a power supply module, and a tension force and the motor are connected with the PC computer through an opening detection module. The detection system can enable the tank safety valve to carry out explosion-proof opening in the non-disassembly state, realizes the detection for opening tension, and is beneficial to improving the tank detection efficiency.
Description
Technical field
The present invention relates to a kind of valve is opened and detecting system, open more particularly, to a kind of groove tank relief valve non collapsible state
Open pull force calculation system.
Background technology
It is with the fast development of China's economic construction, more and more in the items of equipment engineering with pressure management.In view of
The needs of equipment pressure release, relief valve play vital effect during protection equipment.Relief valve is boiler, pressure vessel
With safety attachment important on other equipment that are stressed.Groove on tank-truck for liquefied petroleum gas or liquefied petroleum gas railway tanker
Tank relief valve is safe opening and closing element, is in normally off, when the pressure medium in groove tank increases to over rule under spring-loaded
During definite value, prevent pressure medium in groove tank from exceeding the Special valve of specified value by discharge medium outside system.Relief valve
Important protective effect is run to personal safety and equipment, has been requisite important safety attachment.
The groove tank of lng tanker is one kind of pressure vessel, is promulgated by State Bureau of Technical Supervision《Pressure vessel safety
Technology Supervision Code》、《Liquid gas truck tank safety-supervision regulation》And GB150《GB150-1998》, using lightweight
Design, the special transport vehicle of manufacture, are for the special of the liquid gas such as transporting propane, propylene, dimethyl ether, liquefied ammonia, methylamine, acetaldehyde
Use automobile.Groove tank car belongs to special equipment trade, and National Quality Supervision Bureau General's strict regulations lng tanker must periodic detection；
To an important detection in the safety detection of groove tank car, it is the opening force detection of relief valve, it is to ensure groove tank
Normal operation and during superpressure pressure release vitals.At present, the opening force detection to relief valve needs to dismantle down relief valve
Come, be put in corresponding detection platform and could realize the opening force detection of relief valve.Relief valve is mounted in groove tank, i.e. non collapsible shape
During state, direct detection its opening force can not still be realized at present.And relief valve non collapsible state opening force direct detection is realized, nothing
It is doubtful to greatly improve detection efficiency, it is to avoid to dismantle repeatedly the installation quality problem being likely to result in.
The content of the invention
To realize relief valve non collapsible state opening force direct detection, the present invention proposes a kind of groove tank relief valve non collapsible
State opens pull force calculation system, improves detection efficiency, it is to avoid dismantle repeatedly the installation quality problem being likely to result in.
The present invention adopts following technical scheme：
Described device is installed at the groove tank top safety valve, described device include adapter sleeve, locking nut, stop sleeve,
Feed screw nut, leading screw, coupling band, motor, master collet and explosion-proof sleeve, described device Jing open detection module are connected with computer
Connect；Explosion-proof sleeve, master collet and stop sleeve are tightly connected successively, during motor is sleeved on anti-explosion set cylinder and are fixed on master collet end
Portion, motor are protected by explosion-proof sleeve seal, and the output shaft of motor is coaxially pacified by one end of key and coupling band after stretching into master collet
Dress, in the other end of coupling band, coaxial fixed cover is equipped with feed screw nut, and feed screw nut is enclosed within leading screw the inner and forms lead screw pair, silk
Thrust bearing is installed between thick stick nut and stop sleeve；Leading screw outer end is screwed multidiameter and extend into stop sleeve
Interior, leading screw is co-axially mounted with stop sleeve, leading screw outer end thread bush on one end of pulling force sensor, pulling force sensor it is another
, in one end of adapter sleeve, at the top of relief valve, stop sleeve end face is by close for the other end thread bush of adapter sleeve for end thread bush
Seal connection safety valve flange；Have in gap, master collet inner chamber and stop sleeve between stop sleeve inwall and valve gap side face
Chamber communicates, and master collet sidepiece is provided with the gas output interface of external gas outlet duct；Open detection module and pulling force sensor
It is connected with open detection module with motor.
Described system also includes PC computers and power module, and open detection module Jing long-distance transmissions line is connected to
485 turns of USB modules, 485 turns of USB modules connect PC computers；Power module respectively with pulling force sensor, open detection module,
Motor connection is powered.
Described open detection module includes accurate amplification module, level adjustment module, low-pass filtering module, MCU process
Device, motor drive module and 485 drive modules；Pulling force sensor successively Jing precision amplification module, level adjustment module, low pass filtered
It is connected with MCU processors after ripple module, MCU processor Jing motor drive modules are controlled with motor connection, MCU processors Jing 485
Drive module output signal.
Described MCU processors include CPU and are connected to A/D modules, I/O mouths and the serial ports of CPU；The connection of A/D modules is low
Pass filtering module, the I/O mouth Jing motor drive modules of MCU and motor connection, the serial ports of MCU 485 drive modules of Jing, long distance successively
It is connected with PC from transmission line, 485 turns of USB modules.
Described open detection module is installed in explosion-proof electrification box, motor and pulling force sensor outfan Jing anti-explosion electrics
Cable picks out connection open detection module by the anti-explosion cable joint on explosion-proof sleeve.
Described relief valve includes relief valve thrust spring, relief valve valve support, relief valve connecting rod and covers to enter at the top of groove tank
The relief valve valve gap in exit；It is fixedly connected by relief valve connecting rod between relief valve valve gap and relief valve valve support, relief valve valve
In groove tank, relief valve thrust spring two ends withstand on groove tank relief valve flange inner wall and relief valve valve support to restitope respectively, by pressure
Contracting thrust makes relief valve valve gap be pressed on import and export at the top of groove tank, and the other end thread bush of the adapter sleeve is all at the top of valve gap
Face.
Connected by end flanges between described explosion-proof sleeve and master collet, between master collet and stop sleeve, and
Sealing ring is housed between the end face equipped with sealing ring, stop sleeve and relief valve flange between contact surface.
Described leading screw and adapter sleeve wall are processed as coarse external screw thread.
Described leading screw and feed screw nut adopt ball-screw nut and ball-screw.
The invention has benefit that：
The present invention can realize the detection that pulling force is opened to groove tank relief valve non collapsible state, improve groove tank detection efficiency,
Prevent relief valve from the quality problems being likely to result in being installed repeatedly.
Description of the drawings
Fig. 1 is the schematic diagram of present system motion, pulling force sensor and relief valve.
Fig. 2 is the structure chart of present system motion, pulling force sensor and relief valve.
Fig. 3 is the local structural graph of leading screw coupling part of the present invention.
Fig. 4 is the system block diagram of the present invention.
Fig. 5 is the schematic flow sheet of implementation process of the present invention.
In figure：1：Explosion-proof sleeve；2：Master collet；3：Stop sleeve；4：Groove tank relief valve assembly；5：Motor；6：Coupling band；
7：Leading screw；8：Feed screw nut；9：Thrust bearing；10：Pulling force sensor；11：Adapter sleeve；12：Relief valve valve gap；13：Relief valve
Flange；14：Relief valve thrust spring；15：Relief valve locking lid；16：Relief valve locking nut；17：Key；19：Groove tank；29：Peace
Full valve connecting rod.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described in further detail to the present invention.
Apparatus of the present invention are installed at 19 top safety valve 18 of groove tank, as shown in Fig. 2 device includes adapter sleeve 11, locking
Nut, stop sleeve 3, feed screw nut 8, leading screw 7, coupling band 6, motor 5, master collet 2 and explosion-proof sleeve 1, apparatus of the present invention Jing
Open detection module is connected with computer；Explosion-proof sleeve 1, master collet 2 and stop sleeve 3 are tightly connected successively, and motor 5 is sleeved on
In explosion-proof sleeve 1 and 2 end of master collet is fixed on, motor 5 seals protection by explosion-proof sleeve 1, as shown in figure 3, the output of motor 5
After shaft extension enters master collet 2, one end by key 17 with coupling band 6 is co-axially mounted, coaxial fixed suit in the other end of coupling band 6
There is feed screw nut 8, feed screw nut 8 is enclosed within 7 the inner of leading screw and forms lead screw pair, is provided between feed screw nut 8 and stop sleeve 3
Thrust bearing 9；7 outer end of leading screw is screwed multidiameter and extend in stop sleeve 3 that leading screw 7 is coaxial with stop sleeve 3
Install, on one end of pulling force sensor 10, the other end thread bush of pulling force sensor 10 is in adapter sleeve for 7 outer end thread bush of leading screw
In 11 one end, the other end thread bush of adapter sleeve 11 is at the top of relief valve；3 end face of stop sleeve passes through sealing ring attachment security
Valve flange 13；Open detection module is connected with open detection module with pulling force sensor 10 and motor 5.
As shown in figure 4, present system also includes PC computers and power module, open detection module Jing long-distance transmissions
Line is connected to 485 turns of USB modules, and 485 turns of USB modules connect PC computers；Power module respectively with pulling force sensor 10, open
Detection module, the connection of motor 5 are powered.
As shown in figure 4, above-mentioned open detection module include accurate amplification module, level adjustment module, low-pass filtering module,
MCU processor MicroControler Unit, motor drive module and 485 drive modules；Jing is accurate successively for pulling force sensor 10
Be connected with MCU processors after amplification module, level adjustment module, low-pass filtering module, MCU processor Jing motor drive modules with
The connection control of motor 5,485 drive module output signals of MCU processors Jing.
As shown in figure 4, MCU processors include CPU and are connected to the A/D modules A nalog and Digital of CPU
Conversion, I/O mouth Input/Output interface and serial ports；The I/O mouth Jing motor drive modules of MCU are connected with motor
Connect, 485 drive modules of Jing, long-distance transmissions line, 485 turns of USB modules are connected the serial ports of MCU with PC successively.
Open detection module is installed in explosion-proof electrification box, 10 outfan Jing anti-explosion cables of motor 5 and pulling force sensor
Connection open detection module is picked out by the anti-explosion cable joint on explosion-proof sleeve 1.
The I/O port Jing motor drive modules of MCU pass through anti-explosion cable and the anti-explosion cable joint on explosion-proof sleeve 1
Motor drive signal is introduced in explosion-proof sleeve 1 from explosion-proof electrification box, explosion-proof motor 5 is connected to and is controlled its start and stop and turn
To.
Relief valve 18 includes relief valve thrust spring 14, relief valve valve support 15, relief valve connecting rod 29 and covers pushing up in groove tank 19
The relief valve valve gap 12 of portion's import and export；Fixed by relief valve connecting rod 29 between relief valve valve gap 12 and relief valve valve support 15 and connected
Connect, relief valve valve support 15 is located in groove tank 19, and 14 two ends of relief valve thrust spring are withstood in 19 relief valve flange 13 of groove tank respectively
Wall and relief valve valve support 15, make relief valve valve gap 12 be pressed on 19 top import and export of groove tank, adapter sleeve 11 by compressing thrust
Other end thread bush in 12 top side face of relief valve valve gap.Relief valve 18 makes arranged at safety valve in normally closed under spring force effect
State；When in groove tank 19, gas pressure is excessive, gas overcomes 14 thrust of relief valve thrust spring, backs down relief valve valve gap 12.
Have in gap, 2 inner chamber of master collet and stop sleeve 3 between 12 side face of 3 inwall of stop sleeve and relief valve valve gap
Chamber communicates, and 2 side of master collet is provided with gas output interface, the external gas outlet duct of gas output interface.
Connected by end flanges between explosion-proof sleeve 1 and master collet 2, between master collet 2 and stop sleeve 3, and connect
Sealing ring is housed between the end face equipped with sealing ring, stop sleeve 3 and relief valve flange 13 between contacting surface.
Preferred leading screw 7 and 11 wall of adapter sleeve are processed as coarse external screw thread.
Preferred leading screw 7 and feed screw nut 8 adopt ball-screw nut and ball-screw.
The present invention to be embodied as the course of work as follows：
As shown in figure 1, torque is passed to feed screw nut 8 by connecting shaft set 6 by 5 output torque of apparatus of the present invention motor,
Feed screw nut 8 and the composition guide screw movement pair of leading screw 7, change into the linear motion of leading screw 7, and leading screw passes through adapter sleeve 11 and relief valve
Valve gap 12 is connected, and due to the presence of frictional force, leading screw 7 can be made not rotate, therefore the rotation of feed screw nut 8 is converted filamentation
The extensional motion of thick stick 7, leading screw 7 are connected with one end of pulling force sensor 10, the other end and relief valve valve gap 12 of pulling force sensor
It is connected, therefore the pulling force during pulling force sensor 10 can detect opening process when relief valve is opened, but it is concrete from relief valve
Intrinsic parameter is known that relief valve valve gap bore, and the unlatching pulling force of standard, by detecting the unlatching pulling force that obtains and
The relief valve valve gap bore known, can obtain actual relief valve and open pulling force, so as to complete to open pull force calculation.
As shown in figure 5, the signal that open detection module is obtained to pulling force sensor first carries out accurate amplification, level successively adjusting
The pretreatment of whole, low-pass filtering；Its MCU is AD converted successively to the signal that pretreatment is obtained, AD data predictions, serial ports are defeated
Go out signal and 485 signal outputs are converted into by 485 drive modules；The external 485 turns of USB modules of PC realize that 485 signals are changed into
Usb signal inputs to PC, while PC realizes the process of database purchase, data analysiss；Power module to pulling force sensor,
Open detection module and motor provide power supply.
Relief valve opens pull force calculation process, first as shown in Fig. 2 being arranged on groove tank relief valve valve gap in apparatus of the present invention
12 and relief valve flange 13 on before in advance no-load running relief valve open pull force calculation system, and store pull force calculation data,
It is followed by described device is arranged on groove tank relief valve valve gap 12 and relief valve flange 13, starts and open pull force calculation system,
Its carrying out practically is as follows：MCU passes through motor drive module controlled motor rotation direction and speed, drives feed screw nut to rotate, profit
The pulling of leading screw is converted into leading screw side effect, is acted on relief valve valve gap through pulling force sensor, relief valve valve gap is beaten
Open, meanwhile, the pulling force signal that pulling force sensor is collected is detected by A/D module, and is exported by serial ports, sequentially passed through
485 drive modules, remote transmission data wire and 485 turns of USB modules are transferred to PC, and PC storage detection data is to be detected complete
Into testing result is contrasted with no-load running data, so as to remove the impact of gravity and frictional force, obtain more accurate
Pull force calculation result F.Groove tank calibrating gas Opening pressure maximum P can be obtained finally according to relief valve parametermax, groove tank Standard Gases
Body Opening pressure maximum PminWith relief valve gas active area S.
If S*Pmin<=F<=S*PmaxInequality is set up, then can determine that this relief valve opens pulling force normally, otherwise the peace
Full valve opens pulling force exception.
Thus, the present invention completes to open groove tank relief valve the detection of pulling force in non collapsible state, it is to avoid relief valve is anti-
The quality problems being likely to result in are installed again, and groove tank detection efficiency can be improved, be widely used in the effective detection of groove tank safety.
At last it is pointed out that above example is only the more representational example of the present invention.It is clear that the invention is not restricted to above-mentioned
Examples of implementation, may be extended to many aspects.One of ordinary skill in the art is directly derived from present disclosure
Or all deformations associated, it is considered as protection scope of the present invention.
Claims (9)
1. a kind of groove tank relief valve non collapsible state opens pull force calculation system, it is characterised in that：Groove tank (19) top safety valve
(18) place's erecting device, device include adapter sleeve (11), locking nut, stop sleeve (3), feed screw nut (8), leading screw (7), connection
Axle sleeve (6), motor (5), master collet (2) and explosion-proof sleeve (1), described device Jing open detection module are connected with computer；It is anti-
Quick-fried sleeve (1), master collet (2) and stop sleeve (3) are tightly connected successively, during motor (5) is sleeved on explosion-proof sleeve (1) and fixed
In master collet (2) end, motor (5) is protected by explosion-proof sleeve (1) sealing, and the output shaft of motor (5) stretches into master collet (2) and leads to afterwards
One end that key (17) is crossed with coupling band (6) is co-axially mounted, and in the other end of coupling band (6), coaxial fixed cover is equipped with feed screw nut
(8), feed screw nut (8) is enclosed within leading screw (7) the inner and forms lead screw pair, is provided between feed screw nut (8) and stop sleeve (3)
Thrust bearing (9)；Leading screw (7) outer end is screwed multidiameter and extend in stop sleeve (3), leading screw (7) with support
Sleeve (3) is co-axially mounted, leading screw (7) outer end thread bush on one end of pulling force sensor (10), pulling force sensor (10) it is another
Threaded one end is enclosed within one end of adapter sleeve (11), the other end thread bush of adapter sleeve (11) at the top of relief valve, stop sleeve
(3) end face passes through sealing ring connection safety valve flange (13)；Have between stop sleeve (3) inwall and relief valve valve gap (12) side face
There is gap, master collet (2) inner chamber is communicated with stop sleeve (3) inner chamber, and master collet (2) sidepiece is provided with external gas outlet duct
Gas output interface；Open detection module is connected with open detection module with pulling force sensor (10) and motor (5).
2. a kind of groove tank relief valve non collapsible state according to claim 1 opens pull force calculation system, it is characterised in that：
Described system also includes PC computers and power module, and open detection module Jing long-distance transmissions line is connected to 485 turns of USB moulds
Block, 485 turns of USB modules connect PC computers；Power module respectively with pulling force sensor (10), open detection module, motor (5)
Connection is powered.
3. a kind of groove tank relief valve non collapsible state according to claim 1 opens pull force calculation system, it is characterised in that：
Described open detection module includes that accurate amplification module, level adjustment module, low-pass filtering module, MCU processors, motor drive
Dynamic model block and 485 drive modules；Pulling force sensor (10) successively Jing precision amplification module, level adjustment module, low-pass filtering mould
It is connected with MCU processors after block, MCU processor Jing motor drive modules are connected control with motor (5), MCU processors Jing 485 drives
Dynamic module output signal.
4. a kind of groove tank relief valve non collapsible state according to claim 3 opens pull force calculation system, it is characterised in that：
Described MCU processors include CPU and are connected to A/D modules, I/O mouths and the serial ports of CPU；A/D modules connect low-pass filtering mould
Block, the I/O mouth Jing motor drive modules of MCU and motor connection, the serial ports of MCU 485 drive modules of Jing, long-distance transmissions successively
Line, 485 turns of USB modules are connected with PC.
5. a kind of groove tank relief valve non collapsible state according to claim 1 opens pull force calculation system, it is characterised in that：
Described open detection module is installed in explosion-proof electrification box, motor (5) and pulling force sensor (10) outfan Jing anti-explosion electrics
Cable picks out connection open detection module by the anti-explosion cable joint on explosion-proof sleeve (1).
6. a kind of groove tank relief valve non collapsible state according to claim 1 opens pull force calculation system, it is characterised in that：
Described relief valve (18) is including relief valve thrust spring (14), relief valve valve support (15), relief valve connecting rod (29) and covers in groove
The relief valve valve gap (12) of import and export at the top of tank (19)；By safety between relief valve valve gap (12) and relief valve valve support (15)
Valve connecting rod (29) is fixedly connected, and relief valve valve support (15) in groove tank (19), push up respectively by relief valve thrust spring (14) two ends
In groove tank (19) relief valve flange (13) inwall and relief valve valve support (15), compress relief valve valve gap (12) by compressing thrust
The import and export at the top of the groove tank (19), the other end thread bush of the adapter sleeve (11) side face at the top of the relief valve valve gap (12).
7. a kind of groove tank relief valve non collapsible state according to claim 1 opens pull force calculation system, it is characterised in that：
Connected by end flanges between described explosion-proof sleeve (1) and master collet (2), between master collet (2) and stop sleeve (3)
Connect, and sealing ring is housed between the end face equipped with sealing ring, stop sleeve (3) and relief valve flange (13) between contact surface.
8. a kind of groove tank relief valve non collapsible state according to claim 1 opens pull force calculation system, it is characterised in that：
Described leading screw (7) and adapter sleeve (11) wall are processed as coarse external screw thread.
9. a kind of groove tank relief valve non collapsible state according to claim 1 opens pull force calculation system, it is characterised in that：
Described leading screw (7) and feed screw nut (8) are using ball-screw nut and ball-screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510482545.5A CN105065902B (en) | 2015-08-07 | 2015-08-07 | Detection system for opening tension of tank safety valve in non-disassembly state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510482545.5A CN105065902B (en) | 2015-08-07 | 2015-08-07 | Detection system for opening tension of tank safety valve in non-disassembly state |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105065902A CN105065902A (en) | 2015-11-18 |
| CN105065902B true CN105065902B (en) | 2017-05-03 |
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ID=54495347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510482545.5A Active CN105065902B (en) | 2015-08-07 | 2015-08-07 | Detection system for opening tension of tank safety valve in non-disassembly state |
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| CN (1) | CN105065902B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872160A (en) * | 2017-03-10 | 2017-06-20 | 武汉市锅炉压力容器检验研究所 | One kind is without valve rod spring loaded safety valve on-line testing device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7201436A (en) * | 1971-02-04 | 1972-08-08 | Gas cylinder valve - for high pressure ind. gas with built in safety valve | |
| FR2796701B1 (en) * | 1999-07-22 | 2001-09-07 | Giat Ind Sa | SAFETY VALVE FOR A SEALED ENCLOSURE CONTAINING A PRESSURE FLUID SUCH AS AN LPG TANK |
| CN203641605U (en) * | 2013-12-21 | 2014-06-11 | 潍坊赛马力发电设备有限公司 | Explosion-proof valve of gas engine |
| CN104806772B (en) * | 2015-04-27 | 2017-03-08 | 西峡龙成特种材料有限公司 | A kind of self-grind high-temperature dust environment gas pipeline seals seat valve |
| CN204879440U (en) * | 2015-08-07 | 2015-12-16 | 中国计量学院 | Tensile testing device is opened to jar relief valve non - dismantlement state in groove |
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2015
- 2015-08-07 CN CN201510482545.5A patent/CN105065902B/en active Active
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| CN105065902A (en) | 2015-11-18 |
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