CN202562715U - Leak detection system - Google Patents
Leak detection system Download PDFInfo
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- CN202562715U CN202562715U CN2012201385934U CN201220138593U CN202562715U CN 202562715 U CN202562715 U CN 202562715U CN 2012201385934 U CN2012201385934 U CN 2012201385934U CN 201220138593 U CN201220138593 U CN 201220138593U CN 202562715 U CN202562715 U CN 202562715U
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- leak detection
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- electromagnetic flowmeter
- operated valve
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Abstract
The utility model relates to a leak detection system, comprising a control device, an industrial ethernet switch, a disconnecting relay, a control instruction conversion device, an RS485 module, an intermediate relay and a leak detection device. The industrial ethernet switch is connected with the control device and is also connected with the disconnecting relay. The control instruction conversion device is connected with the disconnecting relay, the RS485 module and the intermediate relay. The RS485 module and the intermediate relay are both connected with the leak detection device. The leak detection device comprises three electrically operated valves and two electromagnetic flowmeters, wherein the electrically operated valves are connected with the intermediate relay, and the electromagnetic flowmeters are connected with the RS485 module. Two of the electrically operated valves are connected in series to a water inlet end and a water outlet end of a tube on which leak detection is performed. Another electrically operated valve and one of the electromagnetic flowmeters are connected in series and then are connected in parallel with the tube on which leak detection is performed. The other electromagnetic flowmeter is connected in series to the water inlet end of the tube on which leak detection is performed. The nominal diameter of the serially-connected electromagnetic flowmeter is at least twice that of the parallely-connected electromagnetic flowmeter. The utility mode increases the leak detection accuracy.
Description
Technical field
The utility model relates to leak hunting technology, particularly relates to a kind of leak detection system to devices such as water-cooling walls.
Background technology
The blast furnace that is used to smelt etc. can dispose water-cooling wall usually.Water-cooling wall comprises many cooling tubes, and each root cooling tube all is connected respectively with outfall sewer with water inlet manifold.For guaranteeing the safe operation of blast furnace, need detect water-cooling wall usually, whether there is leakage problem with timely discovery water-cooling wall.
Existing leak detection implementation is generally: the water inlet end at every cooling tube is connected in series an electromagnetic flowmeter respectively; And be connected in series an electromagnetic flowmeter respectively in the water side of every cooling tube; Detect the inflow and the aquifer yield of every cooling tube through two electromagnetic flowmeters of every cooling tube; Afterwards, judge according to the inflow of cooling tube and the difference of aquifer yield whether cooling tube exists leakage phenomenon.
The inventor finds in realizing the utility model process, because all can there be certain error in every electromagnetic flowmeter, therefore, the error accumulation meeting of two electromagnetic flowmeters influences the leakage of cooling tube and judges; And; The flow detection precision of electromagnetic flowmeter that is serially connected in cooling tube is not high usually; A certain amount of leakage of cooling tube may not effectively be detected, and electromagnetic flowmeter imitate is transferred must two electromagnetic flowmeters matched to imitate to transfer cause maintenance and difficult installation.
Because the problem that above-mentioned existing leak detection implementation exists; The inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge; And cooperate the utilization of studying the science, actively study innovation, in the hope of founding a kind of leak detection system of new structure; Overcome the problem that existing leak detection implementation exists, make it have more practicality.Through continuous research and design, and, found out the utility model of true tool practical value finally through after studying sample and improvement repeatedly.
The utility model content
The purpose of the utility model is, overcomes the defective that existing leak detection implementation exists, and a kind of novel leak detection system is provided, and technical matters to be solved is to improve the detection accuracy of leaking.
The purpose of the utility model and solve its technical matters and can adopt following technical scheme to realize.
A kind of leak detection system according to the utility model proposes comprises: opertaing device, EPA switch, disconnecting relay, control command conversion equipment, RS485 module, auxiliary reclay and leakage detection apparatus; Wherein, Said EPA switch is connected with opertaing device through Ethernet; And be connected with disconnecting relay, said control command conversion equipment is connected respectively with auxiliary reclay with disconnecting relay, RS485 module, and said RS485 module all is connected with leakage detection apparatus with auxiliary reclay; Said leakage detection apparatus comprises: three electrically operated valves and two electromagnetic flowmeters, and said electrically operated valve is connected with auxiliary reclay, and said electromagnetic flowmeter is connected with the RS485 module; Wherein, First electrically operated valve is serially connected with by the water inlet end of leak detection tube, second electrically operated valve and is serially connected with by the water side of leak detection tube; The 3rd electrically operated valve and electromagnetic flowmeter serial connection back with by leak detection tube and connect; Another electromagnetic flowmeter is serially connected with by the water inlet end of leak detection tube, and the nominal diameter of the electromagnetic flowmeter of said serial connection be said and the n of the nominal diameter of the electromagnetic flowmeter that connects doubly, n >=2; Said opertaing device transmits the ON/OFF control command of electrically operated valve through EPA switch and disconnecting relay to the control command conversion equipment, and receives the flow information of the next electromagnetic flowmeter of said control command conversion equipment transmission; The control signal that said control command conversion equipment obtains after said control command is changed is sent to auxiliary reclay, and the flow information that obtains after the flow signal conversion that the transmission of RS485 module is next sends to opertaing device through disconnecting relay and EPA switch.
The purpose of the utility model and solve its technical matters and can also adopt following technical measures to come further to realize.
Preferable, aforesaid leak detection system, the ON/OFF control command of wherein said electrically operated valve comprises:
Close the electrically operated valve of series connection and open the electrically operated valve of parallel connection, perhaps open the electrically operated valve of series connection and close parallelly connected electrically operated valve.
Preferable, aforesaid leak detection system, wherein said control command conversion equipment comprises:
At least one control module is connected with said disconnecting relay through Ethernet, and is connected with the RS485 module; A plurality of switching value output modules are connected with said control module, and are connected with said auxiliary reclay; A plurality of switching input modules are connected with said control module, and are connected with said auxiliary reclay.
Preferable, aforesaid leak detection system, wherein said control module comprises: be Programmable Logic Controller or single chip control module.
Preferable; Aforesaid leak detection system; Wherein said control module is m, said m >=1, and said switching input module and switching value output module all are divided into the m group; And a control module is connected respectively with one group of switching value output module with one group of switching input module, and a control module, one group of switching input module and one group of switching value output module are set in the control module cabinet.
Preferable, aforesaid leak detection system, wherein said leakage detection apparatus also comprises: the 3rd electromagnetic flowmeter is serially connected with by the water side of leak detection tube.
Preferable, aforesaid leak detection system, wherein said the 3rd electrically operated valve and an electromagnetic flowmeter serial connection back and said first electrically operated valve also connect.
Preferable, aforesaid leak detection system, wherein said electrically operated valve comprises: electrical ball valve.
Preferable, aforesaid leak detection system, wherein said system also comprises: printer is connected with said opertaing device.
By technique scheme; The leak detection system of the utility model has advantage and beneficial effect at least: the utility model is through being provided with parts such as EPA switch, disconnecting relay, control command conversion equipment, RS485 module and auxiliary reclay; Make opertaing device can control the switch of the electrically operated valve in the leakage detection apparatus, and receive the flow information that is arranged at by the electromagnetic flowmeter at leak detection tube place; Through being provided with and being connected by leak detection tube and parallelly connected electrically operated valve and electromagnetic flowmeter; Whether and the nominal diameter of electromagnetic flowmeter that makes parallel connection is much smaller than the nominal diameter of electromagnetic flowmeter of series connection, make the opertaing device can through relatively existing leakage phenomenon, which leak detection tube to have the order of severity etc. of leakage phenomenon and leakage once can clearly being known by the flow information of the different electric magnetic flowmeter at leak detection tube place by leak detection tube; Thereby the utility model has improved the accuracy of Leak Detection to a great extent, is very suitable for practicality.
In sum, the utility model has obvious improvement technically, and has significantly positive technique effect, becomes the new design of a novelty, progress, practicality.
Above-mentioned explanation only is the general introduction of the utility model technical scheme; In order more to know the technological means of understanding the utility model; And can implement according to the content of instructions, and in order to let the above-mentioned of the utility model and other purposes, characteristic and the advantage can be more obviously understandable, below special act preferred embodiment; And conjunction with figs., specify as follows.
Description of drawings
Fig. 1 is the leak detection system synoptic diagram of the utility model;
Fig. 2 is the leakage detection apparatus synoptic diagram of the utility model.
Embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined utility model purpose is taked; Below in conjunction with accompanying drawing and preferred embodiment; To its embodiment of leak detection system, structure, characteristic and the effect thereof that proposes according to the utility model, specify as after.
The leak detection system of the utility model is shown in accompanying drawing 1.
Leak detection system shown in Fig. 1 mainly comprises: opertaing device 1, EPA switch 2, disconnecting relay 3, control command conversion equipment 4, RS485 module 5, auxiliary reclay 6 and leakage detection apparatus 7.In addition, this leak detection system can also comprise: printer 8.Wherein, opertaing device 1 is connected respectively with printer 8 with EPA switch 2 through Ethernet; EPA switch 2 also is connected with disconnecting relay 3; Disconnecting relay 3 also is connected with control command conversion equipment 4; And control command conversion equipment 4 also is connected respectively with auxiliary reclay 6 with RS485 module 5, and leakage detection apparatus 7 is connected respectively with auxiliary reclay 6 with RS485 module 5.Need to prove; Though only show a printer 8, RS485 module 5, an auxiliary reclay 6 and a leakage detection apparatus 7 among Fig. 1; But; In practical application, the quantity of printer 8, RS485 module 5, auxiliary reclay 6 and leakage detection apparatus 7 can be set to a plurality of according to actual application environment.
Main control equipment 1 is mainly used in the operation leak detection program that is provided with; To carry out corresponding operation; Whether each is existed leakage phenomenon by leak detection tube like regular detection, concrete, issues the ON/OFF control command of corresponding electrically operated valve; Receive the feedback information of electromagnetic flowmeter and electrically operated valve, and according to feedback information judge by leak detection tube whether have leakage phenomenon, there is order of severity of leakage phenomenon and leakage or the like in which by leak detection tube.Main control equipment 1 can be shown to the user with its judged result (as leaking warning information etc.), and main control equipment can also show other content for the user, like the flow information of each electromagnetic flowmeter or valve switch state picture or the like.The ON/OFF control command of above-mentioned electrically operated valve can be specially: be directed against certain by leak detection tube; Close two electrically operated valves of series connection and open the control command of electrically operated valve of parallel connection, also can be specially: open two electrically operated valves of series connection and close the control command of the electrically operated valve of parallel connection.This main control equipment 1 can be specially computing machine or server etc.
The main effect of EPA switch 2 is in the industrial environment of complicacy, to realize Ethernet data transmission real-time between main control equipment and the miscellaneous equipment.The utility model can adopt the EPA switch of existing multiple model.
Disconnecting relay 3 is mainly used in avoids the on-the-spot harmful effect that leak detection system is caused of disturbing.The utility model can adopt the disconnecting relay of existing multiple signal.
Control command conversion equipment 4 is mainly used in information format conversion, converts the switching value signal into like the control command that 2 transmission of EPA switch are come, and this switching value signal is transferred to auxiliary reclay 6; For another example, the flow signal of the electromagnetic flowmeter that control command conversion equipment 4 is next with 5 transmission of RS485 module converts the signal of ethernet format into, and the signal of this ethernet format is sent to opertaing device 1 through disconnecting relay 3 and EPA switch 2.
Control command conversion equipment 4 can specifically comprise a plurality of switch boards (like PLC (Programmable Logic Controller) cabinet); Though only show two switch boards (like two PLC cabinets) among Fig. 1; But in practical application, control command conversion equipment 4 can also comprise the switch board of greater number.
A switch board can comprise a control module 41 and a plurality of switching value module (like ET200M) 42.Control module 41 can be Programmable Logic Controller (like the S7-300 Programmable Logic Controller) or single chip control module.Control module 41 is connected with disconnecting relay 3, and all is connected with each switching value module (like ET200M) 42 in this switch board, and in addition, control module 41 (like Programmable Logic Controller or single chip control module) also is connected with RS485 module 5 through the RS485 bus.Switching value module (like ET200M) 42 is except with control module 41 (like Programmable Logic Controller or single chip control module) is connected; Also be connected, and each switching value module (like ET200M) 42 can include switching value output module and switching input module with auxiliary reclay 6.
The switching value output module is mainly used in to the electrically operated valve transmission and opens/management and control system information, and switching input module is mainly used in the current on off state information to the system feedback electrically operated valve.Above-mentioned switching value output module can be multipoint switch amount output module, and above-mentioned switching input module can be multipoint switch amount load module.
RS485 module 5 is mainly used in the transmission of the flow information of the electromagnetic flowmeter between electromagnetic flowmeter and the control module 41 (like Programmable Logic Controller or single chip control module).
Leakage detection apparatus 7 is mainly used in the control command that issues according to opertaing device 1 and carries out corresponding operation; As open certain electrically operated valve or close certain electrically operated valve etc.; And the flow information that produces to opertaing device 1 feedback electromagnetic flowmeter; Optional, can also be to the current open/close state of opertaing device 1 feedback electrically operated valve.
Leakage detection apparatus 7 comprises: three electrically operated valves (electrical ball valve) and two electromagnetic flowmeters.In addition, this leakage detection apparatus 7 can also comprise the 3rd electromagnetic flowmeter.The quantity of leakage detection apparatus can be according to being provided with by the quantity of leak detection tube, and an object lesson of leakage detection apparatus is shown in accompanying drawing 2.
Each electrically operated valve in the utility model all is connected with auxiliary reclay, carrying out corresponding switching manipulation according to the control command of opertaing device 1, and to opertaing device 1 its current on off state information of feedback.
Each electromagnetic flowmeter in the utility model all is connected with the RS485 module, with the flow information to opertaing device 1 its generation of feedback.
Concrete; First electrically operated valve is serially connected with by the water inlet end of leak detection tube, second electrically operated valve and is serially connected with by the water side of leak detection tube; The 3rd electrically operated valve and electromagnetic flowmeter serial connection back with by leak detection tube and connect; Another electromagnetic flowmeter is serially connected with by the water inlet end of leak detection tube, if there be the 3rd electromagnetic flowmeter, then the 3rd electromagnetic flowmeter is serially connected with by the water side of leak detection tube.In the utility model, the nominal diameter of the electromagnetic flowmeter of serial connection is and at least 2 times of the nominal diameter of the electromagnetic flowmeter that connects.In addition, the 3rd electrically operated valve preferably is attempted by by the water inlet end of leak detection tube.Water inlet end in the utility model is meant that by the part near water inlet manifold of leak detection tube, the water side in the utility model is meant by the part near outfall sewer of leak detection tube.
Printer 8 is mainly used in the print command that 1 transmission comes according to opertaing device and carries out corresponding printing.Printer 8 can be connected with opertaing device 1 through Ethernet.
Be example so that the blast furnace water-cooling wall of steel mill is hunted leak below, the leak detection system of the utility model is described.
Setting this blast furnace water-cooling wall is made up of 144 water cooling tubes; Then present embodiment need carry out Leak Detection respectively to 144 water cooling tubes; Thereby leakage detection apparatus should be set amount to 144 covers; Every cover leakage detection apparatus is built-in with 2 electromagnetic flowmeters and 3 electrical ball valves (the electrical ball valve A shown in Fig. 2, electrical ball valve B and electrical ball valve C), amounts to 432 electrical ball valves and 288 electromagnetic flowmeters.Adopt 16 RS485 cables to carry out communication between electromagnetic flowmeter and the Programmable Logic Controller, and every RS485 communication cable connect 18 electromagnetic flowmeters.
Programmable Logic Controller adopts the S7-300 controller of 2 cover Siemenss, is placed on respectively in two PLC cabinets.
The leak detection system of present embodiment disposes 16 RS485 modules, and each RS485 draws a RS485 communication cable, draws 16 RS485 communication cables altogether.
The leak detection system of present embodiment disposes 10 32 switching value output modules, and 3 auxiliary reclays of an output channel driving of 32 switching value output modules, controls 3 electrical ball valves of one group with correspondence.
The leak detection system of present embodiment disposes 28 32 switching input modules, the status signal of the corresponding electrical ball valve of an input channel of 32 switching input modules.
432 electrical ball valves of present embodiment are divided into 144 groups, and every group of 3 electrical ball valves are controlled opening or closing of 3 electrical ball valves in one group simultaneously with 1 switching value signal, and control the pass of 3 electrical ball valves in a group simultaneously or open with other 1 switching value signal.In addition, the valve position feedback signal of 3 electrical ball valves in every group is respectively through indication.
The switch controlling signal of the electrical ball valve that opertaing device issues all inserts Programmable Logic Controller after the 24VDC disconnecting relay is isolated, avoided the harmful effect of on-the-spot interference to Programmable Logic Controller.
Be transferred to the switch feedback signal of the electrical ball valve of opertaing device 1, all access control equipment 1 after the 24VDC disconnecting relay is isolated has avoided on-the-spot interference feedback in Programmable Logic Controller.
Opertaing device can be set the leak detection time of every water cooling tube according to actual needs, and a concrete testing process is following:
1, closes the electrical ball valve A of water side, close the electrical ball valve B of water inlet end, and open electrical ball valve C.
2, receive and analyze the flow information of DN65 electromagnetic flowmeter (being that nominal diameter is the electromagnetic flowmeter of DN65) and DN2-6 electromagnetic flowmeter (being that nominal diameter is the electromagnetic flowmeter of DN2-6) output; Because the flow size of the electromagnetic flowmeter of DN65 and DN2-6 output complements each other; Therefore, can measure the present flow rate value of this water cooling tube accurately.
3, judge whether this water cooling tube leaks, in theory,, represent that then this water cooling tube does not leak if the present flow rate value of this water cooling tube is 0; If greater than 0, represent that then this water cooling tube leaks, still; In practical application, the threshold value that judgement is leaked can rule of thumb be set, like flow range between 0-21.5T/h; Do not explain and leak, otherwise leakage has taken place in expression.
4, whether this water cooling tube is overhauled according to above-mentioned judgement decision.
5, the Leak Detection of this water cooling tube finishes, and opens electrical ball valve A and B, and closes electrical ball valve C, recovers the cooling water flow of this water cooling tube.
The detection of 6, whether next root cold water pipe being leaked.
The above only is the preferred embodiment of the utility model; Be not that the utility model is done any pro forma restriction; Though the utility model discloses as above with preferred embodiment; Yet be not in order to limit the utility model; Any professional and technical personnel of being familiar with makes a little change or is modified to the equivalent embodiment of equivalent variations when the technology contents of above-mentioned announcement capable of using in not breaking away from the utility model technical scheme scope, is the content that does not break away from the utility model technical scheme in every case;, all still belong in the scope of the utility model technical scheme any simple modification, equivalent variations and modification that above embodiment did according to the technical spirit of the utility model.
Claims (8)
1. a leak detection system is characterized in that, comprising:
Opertaing device, EPA switch, disconnecting relay, control command conversion equipment, RS485 module, auxiliary reclay and leakage detection apparatus;
Wherein, Said EPA switch is connected with opertaing device through Ethernet; And be connected with disconnecting relay, said control command conversion equipment is connected respectively with auxiliary reclay with disconnecting relay, RS485 module, and said RS485 module all is connected with leakage detection apparatus with auxiliary reclay;
Said leakage detection apparatus comprises: three electrically operated valves and two electromagnetic flowmeters, and said electrically operated valve is connected with auxiliary reclay, and said electromagnetic flowmeter is connected with the RS485 module;
Wherein, First electrically operated valve is serially connected with by the water inlet end of leak detection tube, second electrically operated valve and is serially connected with by the water side of leak detection tube; The 3rd electrically operated valve and electromagnetic flowmeter serial connection back with by leak detection tube and connect; Another electromagnetic flowmeter is serially connected with by the water inlet end of leak detection tube, and the nominal diameter of the electromagnetic flowmeter of said serial connection be said and the n of the nominal diameter of the electromagnetic flowmeter that connects doubly, n >=2;
Said opertaing device transmits the ON/OFF control command of electrically operated valve through EPA switch and disconnecting relay to the control command conversion equipment, and receives the flow information of the next electromagnetic flowmeter of said control command conversion equipment transmission;
Said control command conversion equipment sends the control signal that obtains after the said control command conversion to auxiliary reclay, and sends the flow information that obtains after the next flow signal conversion of said RS485 module transmission to opertaing device through disconnecting relay and EPA switch.
2. system according to claim 1 is characterized in that, said control command conversion equipment comprises:
At least one control module is connected with said disconnecting relay through Ethernet, and is connected with the RS485 module;
A plurality of switching value output modules are connected with said control module, and are connected with said auxiliary reclay;
A plurality of switching input modules are connected with said control module, and are connected with said auxiliary reclay.
3. system according to claim 2 is characterized in that:
Said control module comprises: be Programmable Logic Controller or single chip control module.
4. system according to claim 2; It is characterized in that; Said control module is m, said m >=1, and said switching input module and switching value output module all are divided into the m group; And a control module is connected respectively with one group of switching value output module with one group of switching input module, and a control module, one group of switching input module and one group of switching value output module are set in the control module cabinet.
5. according to the described system of arbitrary claim in the claim 1 to 4, it is characterized in that said leakage detection apparatus also comprises:
The 3rd electromagnetic flowmeter is serially connected with by the water side of leak detection tube.
6. according to the described system of arbitrary claim in the claim 1 to 4, it is characterized in that said the 3rd electrically operated valve and an electromagnetic flowmeter serial connection back and said first electrically operated valve also connect.
7. according to the described system of arbitrary claim in the claim 1 to 4, it is characterized in that said electrically operated valve comprises: electrical ball valve.
8. according to the described system of arbitrary claim in the claim 1 to 4, it is characterized in that said system also comprises:
Printer is connected with said opertaing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201385934U CN202562715U (en) | 2012-04-01 | 2012-04-01 | Leak detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201385934U CN202562715U (en) | 2012-04-01 | 2012-04-01 | Leak detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202562715U true CN202562715U (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201385934U Withdrawn - After Issue CN202562715U (en) | 2012-04-01 | 2012-04-01 | Leak detection system |
Country Status (1)
| Country | Link |
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| CN (1) | CN202562715U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364154A (en) * | 2012-04-01 | 2013-10-23 | 洛阳博特自动化工程有限公司 | Leak detection system |
| CN104569644A (en) * | 2013-10-22 | 2015-04-29 | 国家电网公司 | Test system and test control device thereof |
| CN107179722A (en) * | 2017-07-06 | 2017-09-19 | 江苏新扬机电设备有限公司 | A kind of third gear actuator control module for air conditioner |
-
2012
- 2012-04-01 CN CN2012201385934U patent/CN202562715U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364154A (en) * | 2012-04-01 | 2013-10-23 | 洛阳博特自动化工程有限公司 | Leak detection system |
| CN103364154B (en) * | 2012-04-01 | 2016-05-18 | 洛阳博特自动化工程有限公司 | Leak detection system |
| CN104569644A (en) * | 2013-10-22 | 2015-04-29 | 国家电网公司 | Test system and test control device thereof |
| CN107179722A (en) * | 2017-07-06 | 2017-09-19 | 江苏新扬机电设备有限公司 | A kind of third gear actuator control module for air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: System for using high-efficiency filter for scanning leak detection Effective date of registration: 20131105 Granted publication date: 20121128 Pledgee: Luoyang Gaoxin small loan Co., Ltd. Pledgor: Luoyang Bote Automation Engineering Co., Ltd. Registration number: 2013990000818 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121128 Effective date of abandoning: 20160518 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |