CN203297746U - Noise-reduction type pressure regulating valve set - Google Patents
Noise-reduction type pressure regulating valve set Download PDFInfo
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- CN203297746U CN203297746U CN2013203317940U CN201320331794U CN203297746U CN 203297746 U CN203297746 U CN 203297746U CN 2013203317940 U CN2013203317940 U CN 2013203317940U CN 201320331794 U CN201320331794 U CN 201320331794U CN 203297746 U CN203297746 U CN 203297746U
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- Prior art keywords
- regulating valve
- pressure regulating
- type pressure
- connecting tube
- voltage regulation
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 40
- 230000033228 biological regulation Effects 0.000 claims description 40
- 230000035939 shock Effects 0.000 claims description 33
- 238000013016 damping Methods 0.000 claims description 26
- 230000030279 gene silencing Effects 0.000 claims description 23
- 238000009792 diffusion process Methods 0.000 claims description 10
- 239000004575 stone Substances 0.000 claims description 7
- 239000003034 coal gas Substances 0.000 abstract description 9
- 238000010521 absorption reaction Methods 0.000 abstract 4
- 230000003139 buffering effect Effects 0.000 abstract 1
- 230000003584 silencer Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 239000003921 oil Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000005381 potential energy Methods 0.000 description 5
- 230000032683 aging Effects 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
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Abstract
The utility model relates to a noise-reduction type pressure regulating valve set, in particular to a noise-reduction type pressure regulating valve set which can effectively buffer vibration through damp vibration absorption devices to further achieve noise reduction, wherein the damp vibration absorption devices are connected to a connection pipe set, and high-speed coal gas flow impacts the inner wall of the connection pipe set to produce the vibration. The noise-reduction type pressure regulating valve set comprises a first pressure regulating valve assembly and a second pressure regulating valve assembly which is connected with the first pressure regulating valve assembly through the connection pipe set; the second pressure regulating valve assembly is connected with a silencer; the connection pipe set is provided with at least two damp vibration absorption devices which are used for buffering the vibration, and the high-speed coal gas flow impacts the inner wall of the connection pipe set to produce the vibration. By the adoption of the design of the damp vibration absorption devices which are connected to the connection pipe set, the vibration produced due to the fact that the high-speed coal gas flow impacts the inner wall of the connection pipe set can be effectively buffered; the purpose of noise reduction is further achieved; therefore, noise is restrained from the noise producing source.
Description
Technical field
The utility model relates to a kind of silencing type pressure regulating valve group, relates in particular to a kind ofly by the damping device that is connected on the connecting tube group, can effectively alleviate the vibrations that the high speed Gas Flow produces, and then realizes the silencing type pressure regulating valve group of noise reduction.
Background technique
At present, the existing silencing type pressure regulating valve group that is exclusively used in iron-smelting process, for example the patent No. is the silencing type pressure regulating valve group of putting down in writing in the Chinese patent of 200620012151X, although had certain sound-deadening and noise-reducing effect, but can not meet the demand of the on-the-spot and environment of iron-smelting process, the attention of country to the ambient noise pollution especially in recent years.
Produce noise be that mainly coal gas enters baffler by the pressure regulator valve group after, the gas pressure rapid drawdown, the volume rapid expansion, cause the pressure regulator valve group to produce the sound that screams of high speed Gas Flow quick-blow inner-walls of duct; The high speed impact of high speed Gas Flow to regulating valve arranged again, and the pressure regulator valve group also produces extremely strong vibrations, trigger noise simultaneously.
Mainly there is following problem in existing silencing type pressure regulating valve group:
1, the high speed Gas Flow, by after valve module of voltage regulation, directly enters baffler or gaspipe network, without any changeover portion, causes to obtain coal gas instantaneous expansion in pipeline, and impact sound reduction device or gas pipe inwall, cause extremely strong vibrations potential energy.
2, the base for supporting of valve module of voltage regulation and baffler bottom and brace foundation linkage interface do not have glissando substantially, and what have is also simple rubber mat plate, can not eliminate the high strong motion of pressure regulator valve group at all; And rubber mat plate also can be under vibration environment frequently, and is tired, aging gradually, finally loses damping effect.
3, the vibratory source of valve module of voltage regulation results from the regulating valve place, and existing silencing type pressure regulating valve group is all less than at this, doing glissando; Cause shaking on source without any decay.
Therefore, for above deficiency, the utility model is badly in need of providing a kind of new silencing type pressure regulating valve group.
Summary of the invention
The purpose of this utility model is to provide a kind of silencing type pressure regulating valve group, and this silencing type pressure regulating valve group can effectively alleviate by the damping device that is connected on the connecting tube group vibrations that high speed Gas Flow impulse piping inwall produces, and then realizes the purpose of noise reduction.
The purpose of this utility model is achieved through the following technical solutions: a kind of silencing type pressure regulating valve group, comprise the first valve module of voltage regulation and the second valve module of voltage regulation, and between described the first valve module of voltage regulation and the second valve module of voltage regulation, by the connecting tube group, connect; On described the second valve module of voltage regulation, be connected with baffler; On described connecting tube group, be provided with at least two damping devices, be used to alleviating the high speed Gas Flow, impact the vibrations that described connecting tube group inwall produces.
Further, described damping device from top to bottom is provided with successively and connects bearing, hydraulic damper and fixed bearing; Described connection bearing and described fixed bearing are all hinged with described hydraulic damper.
Further, described connecting tube group comprises many connecting tubes and is erected at the connecting frame between each connecting tube; On described connecting tube, be provided with regulating valve; Between each described connecting tube, by connecting frame, interconnect.
Further, described damping device is fixed by described connection bearing and described connecting frame.
Further, described connecting tube comprises valve pipeline section and diffusion pipeline section.
Further, described the first valve module of voltage regulation, the second valve module of voltage regulation and baffler lower end be equipped with for the fixing base for supporting of brace foundation, between described base for supporting and described brace foundation, be provided with shock absorbing seat.
Further, described shock absorbing seat is fixed by a plurality of stone bolt and described base for supporting that are preset in described brace foundation; In described shock absorbing seat, be provided with a plurality of be used to alleviating the Returnning spring of shock absorbing seat compressive deformation; Described Returnning spring correspondence is set on described stone bolt.
Further, described Returnning spring is arranged with telescopic cover spare outward; Should flexible external member comprise lower guide sleeve and be sleeved on the upper telescopic cover in this time guide sleeve; Described lower guide sleeve and described brace foundation are fixed, and described upper telescopic cover and described base for supporting are fixed.
Further, described lower guide sleeve comprises guiding jacket wall and the interior stop lug that is arranged on this guiding jacket wall bottom; Described upper telescopic cover comprises the outer stop lug that is placed in the flexible jacket wall in described guiding jacket wall and is arranged on this flexible jacket wall upper end.
Further, described baffler is provided be used to absorbing the sound-absorbing sheet of noise.
The utility model compared with prior art has advantages of following:
1, the utility model adopts the design of damping device, the main cause that produces noise due to existing modulating valve group is, when the high speed Gas Flow by the first valve module of voltage regulation and while entering the connecting tube group, the flow velocity of high speed Gas Flow can be accelerated, this can make the high speed Gas Flow cause high speed impact to the regulating valve on the connecting tube group, cause the connecting tube group to produce extremely strong vibrations potential energy, and then cause that whole pressure regulator valve group produces vibrations, vibrations can cause huge noise thus; Therefore, by the damping device that is connected on the connecting tube group, can effectively alleviate the vibrations that high speed Gas Flow impact valve produces; And then reach the purpose of noise reduction; To realize that from noise, source occurring suppresses noise.
2, in the present embodiment, adopt all designs hinged with described hydraulic damper of described connection bearing and described fixed bearing, because hydraulic damper is, by oil hydraulic cylinder and retracting cylinder, described connecting tube group is carried out to hydraulic cushion; When at it, being subject to level to vibrations, the rigidity that it is whole and tightness can be destroyed, and the hydraulic oil in it will produce and leak; Therefore, can offset and to vibrations, act on the horizontal shear on described hydraulic damper because of connecting tube group level by articulated elements; Thereby hydraulic damper is played to effective protection.
3, the utility model adopts the design of connecting frame, the shaking force that produces on each connecting tube in the connecting tube group can be concentrated to the damping device that is delivered to its lower end, thereby carry out damping; And this connecting frame can also play the effect of in the vibrations process, the stable connection between each connecting tube being consolidated, to improve the shock resistance of connecting tube group integral body.
4, the utility model adopts the design of diffusion pipeline section, can play the effect of transition, due to the high speed Gas Flow through connecting tube while entering the second valve module of voltage regulation, the gas pressure rapid drawdown, the volume rapid expansion, can produce intense impact to the second valve module of voltage regulation inwall, to pipeline, cause extremely strong vibrations potential energy; Therefore, the diffusion pipeline section can retrain and slow down the rate of expansion of high speed Gas Flow, also reduces gradually the high speed gas speed simultaneously, has avoided the unexpected expansion of coal gas, also just weaken the quick-blow of coal gas to the second valve module of voltage regulation inwall, weakened the vibrations of the second valve module of voltage regulation.
5, the utility model adopts the design of Returnning spring, can further alleviate the shaking force that is delivered on brace foundation; By the reverse reposition force of Returnning spring, offset a part and directly act on the shaking force on described shock absorbing seat, vibrations are tended towards stability more, with this, further reach the effect of noise reduction; Simultaneously, adopt the design of Returnning spring, can effectively alleviate shock absorbing seat because of the long-time fatigue that produces, the aging situation of being out of shape; Objectively played the protection shock absorbing seat, the purpose that extends its working life.
6, the utility model adopts the design of flexible external member, can effectively protect shock absorbing seat, when shock absorbing seat deforms, adopt lower guide sleeve and upper telescopic cover to coordinate backstop, can effectively control the degree of deformation of shock absorbing seat, make its excessive situation that can not deform, extend its working life; Simultaneously, by the telescopic process of lower guide sleeve to upper telescopic cover, lead, make the compression of Returnning spring and reseting procedure more steady; Make damping effect better, further realize the purpose to pressure regulator valve group noise reduction.
The accompanying drawing explanation
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the structural representation (plan view) of silencing type pressure regulating valve group described in the utility model;
Fig. 2 is the structural representation (plan view) of damping device described in the utility model;
Fig. 3 is the structural representation (sectional view of A-A in Fig. 1) of connecting frame described in the utility model;
Fig. 4 is the structural representation (main sectional view) of shock absorbing seat described in the utility model.
Embodiment
Referring to Fig. 1, Fig. 2, shown in Figure 3, the silencing type pressure regulating valve group of the present embodiment, comprise the first valve module of voltage regulation 1 and the second valve module of voltage regulation 2, between described the first valve module of voltage regulation and the second valve module of voltage regulation, by connecting tube group 3, connects; On described the second valve module of voltage regulation, be connected with baffler 4; On described connecting tube group, be provided with at least two damping devices 5 that are symmetrical set on both sides before and after described connecting tube group, be used to alleviating the high speed Gas Flow, impacting the vibrations that described connecting tube group inwall produces.The utility model adopts the design of damping device, the main cause that produces noise due to existing modulating valve group is, when the high speed Gas Flow by the first valve module of voltage regulation and while entering the connecting tube group, the flow velocity of high speed Gas Flow can be accelerated, this can make the high speed Gas Flow can produce high speed impact to the regulating valve on the connecting tube group, cause the connecting tube group to produce extremely strong vibrations potential energy, and then cause that whole pressure regulator valve group produces vibrations, vibrations can cause huge noise thus; Therefore, by the damping device that is connected on the connecting tube group, can effectively alleviate the vibrations that high speed Gas Flow impact valve produces; And then reach the purpose of noise reduction; To realize that from noise, source occurring suppresses noise.
Damping device described in the present embodiment from top to bottom is provided with successively for the connection bearing 6 that is connected with described connecting tube group, be used to the hydraulic damper of alleviating vibrations and fixed bearing 7 for being connected with brace foundation 30; Described connection bearing and described fixed bearing are all hinged by articulated elements and described hydraulic damper.Articulated elements described in the present embodiment adopts pin (belong to prior art, do not show in figure).
In the present embodiment, adopt all designs hinged with described hydraulic damper of described connection bearing and described fixed bearing, because hydraulic damper is, by oil hydraulic cylinder and retracting cylinder, described connecting tube group is carried out to hydraulic cushion; When at it, being subject to level to vibrations, the rigidity that it is whole and tightness can be destroyed, and the hydraulic oil in it will produce and leak; Therefore, can offset and to vibrations, act on the horizontal shear on described hydraulic damper because of connecting tube group level by articulated elements; Thereby hydraulic damper is played to effective protection.
Referring to Fig. 1, shown in Figure 3, the group of connecting tube described in the present embodiment comprises many along the connecting tube 8 of described the first valve module of voltage regulation and the distribution of the second valve module of voltage regulation end face even circumferential and is erected at the connecting frame 9 between each connecting tube; On described connecting tube, be provided with the regulating valve 10 be used to regulating gas pressure; Between each described connecting tube, by connecting frame, interconnect.Described in the present embodiment, each connecting tube all is horizontally disposed with, and each connecting tube is parallel to each other; The front end of connecting tube described in the present embodiment is communicated with described the first valve module of voltage regulation, and described connecting tube rear end is communicated with described the second valve module of voltage regulation; Connecting frame described in the present embodiment comprises for vertically connecting the vertical connecting rod 11 of adjacent two connecting tubes and being the diagonal control arm 12 be used to improving the connecting frame rigidity that intersection arranges; Connecting frame described in the present embodiment can improve on the whole the connection between each connecting tube and support stable degree.
Referring to Fig. 2, shown in Figure 3, damping device described in the present embodiment is fixed by described connection bearing and described connecting frame.The integral body of damping device described in the present embodiment is vertical setting; Wherein, described hydraulic damper comprises the retracting cylinder 13 hinged with described fixed bearing, is set in the oil hydraulic cylinder 14 on this retracting cylinder and is arranged on the strut 15 on this oil hydraulic cylinder, and this strut is with described to be connected bearing hinged; Described retracting cylinder and oil hydraulic cylinder are the closed piston setting; When vibrations occurred, described retracting cylinder can cushion according to the variation of shaking moment flexible in oil hydraulic cylinder; Described in the present embodiment, hydraulic damper belongs to prior art, about its concrete structure, no longer too much repeats herein.The utility model adopts the design of connecting frame, the shaking force that produces on each connecting tube in the connecting tube group can be concentrated to the damping device that is delivered to its lower end, thereby carry out damping; And this connecting frame can also play the effect of in the vibrations process, the stable connection between each connecting tube being consolidated, to improve the shock resistance of connecting tube group integral body.
Shown in Figure 1, connecting tube described in the present embodiment comprises that being of the anterior valve pipeline section 16 that is provided with described regulating valve and rear portion gradually puts the diffusion pipeline section 17 that shape arranges.The pipeline section of valve described in the present embodiment is communicated with described the first valve module of voltage regulation; Described diffusion pipeline section is communicated with described the second valve module of voltage regulation; Wherein, described diffusion pipeline section is and gradually puts shape and arrange and to refer to: the bore of this diffusion pipeline section front end is consistent with the bore of described valve pipeline section, and this spreads the bore of the bore of pipeline section rear end greater than its front end.
The utility model adopts the design of diffusion pipeline section, can play the effect of transition, due to the high speed Gas Flow through connecting tube while entering the second valve module of voltage regulation, the gas pressure rapid drawdown, the volume rapid expansion, can produce intense impact to the second valve module of voltage regulation inwall, to pipeline, cause extremely strong vibrations potential energy; Therefore, the diffusion pipeline section can retrain and slow down the rate of expansion of high speed Gas Flow, also reduces gradually the high speed gas speed simultaneously, has avoided the unexpected expansion of coal gas, also just weaken the quick-blow of coal gas to the second valve module of voltage regulation inwall, weakened the vibrations of the second valve module of voltage regulation.
Referring to Fig. 1, shown in Figure 4, the first valve module of voltage regulation described in the present embodiment, the second valve module of voltage regulation and baffler lower end be equipped with for the fixing base for supporting 18 of brace foundation, between described base for supporting and described brace foundation, be provided with the shock absorbing seat 19 for damping; Shock absorbing seat described in the present embodiment adopts the good rubber material of damping performance to make.
Shock absorbing seat described in the present embodiment installs and is fixed into one by a plurality of base plates 21 that are preset in stone bolt 20 and described base for supporting in described brace foundation; In described shock absorbing seat, be provided with a plurality of Returnning springs 22 be used to alleviating the shock absorbing seat compressive deformation; Described Returnning spring correspondence is set on described stone bolt.The base plate of the upper end of Returnning spring described in the present embodiment and described base for supporting joins, and lower end and described brace foundation upper-end surface join; Described Returnning spring integral body is positioned at and is arranged on the mounting hole 23 be used to installing stone bolt on described shock absorbing seat, and this Returnning spring adopts the design of spiral compression spring.
The utility model adopts the design of Returnning spring, can further alleviate the shaking force that is delivered on brace foundation; By the reverse reposition force of Returnning spring, offset a part and directly act on the shaking force on described shock absorbing seat, vibrations are tended towards stability more, with this, further reach the effect of noise reduction; Simultaneously, adopt the design of Returnning spring, can effectively alleviate shock absorbing seat because of the long-time fatigue that produces, the aging situation of being out of shape; Objectively played the protection shock absorbing seat, the purpose that extends its working life.
Returnning spring described in the present embodiment is arranged with the flexible external member for the flexible stroke of stablizing Returnning spring outward; Should flexible external member comprise lower guide sleeve 24 and be sleeved on the upper telescopic cover 25 in this time guide sleeve; Described lower guide sleeve and described brace foundation are fixed, and the base plate of described upper telescopic cover and described base for supporting is fixed.Flexible external member described in the present embodiment also integral body is positioned at described mounting hole.
Lower guide sleeve described in the present embodiment comprises guiding jacket wall 26 and is arranged on the interior stop lug 27 of this guiding jacket wall bottom; Described upper telescopic cover comprises the flexible jacket wall 28 that is placed in described guiding jacket wall and adapts with this guiding jacket wall and the outer stop lug 29 that is arranged on this flexible jacket wall upper end.In the present embodiment, when being subject to the shaking force of base for supporting transmission, the deformation that shock absorbing seat produces compression thereupon and resets; When shaking moment is downward, shock absorbing seat presses down attenuation, and base for supporting makes the Returnning spring compression, goes up telescopic cover simultaneously and moves down along described lower guide sleeve, until described interior stop lug and outer stop lug are respectively by described flexible jacket wall and guiding jacket wall backstop, mobile stopping; When shaking moment made progress, shock absorbing seat resetted, and the Returnning spring resilience that thereupon resets, go up telescopic cover simultaneously and protrude upward along described lower guide sleeve, until that shock absorbing seat resets is complete.
The utility model adopts the design of flexible external member, can effectively protect shock absorbing seat, when shock absorbing seat deforms, adopt lower guide sleeve and upper telescopic cover to coordinate backstop, can effectively control the degree of deformation of shock absorbing seat, make its excessive situation that can not deform, extend its working life; Simultaneously, by the telescopic process of lower guide sleeve to upper telescopic cover, lead, make the compression of Returnning spring and reseting procedure more steady; Make damping effect better, further realize the purpose to pressure regulator valve group noise reduction.
Baffler described in the present embodiment is provided be used to the sound-absorbing sheet that absorbs noise (belong to prior art, do not show in figure).Baffler described in the present embodiment is prior art, and its concrete structure no longer too much repeats herein; The sheet of sound-absorbing described in the present embodiment adopts the sound absorbing materials such as Polyester Fibers, Extruded Monolithic Celluar Ceramics, acoustical cotton to make.Described sound-absorbing sheet is laid in the cylindrical shell of described baffler.
Claims (10)
1. a silencing type pressure regulating valve group, is characterized in that: comprise the first valve module of voltage regulation and the second valve module of voltage regulation, between described the first valve module of voltage regulation and the second valve module of voltage regulation, by the connecting tube group, connect; On described the second valve module of voltage regulation, be connected with baffler; On described connecting tube group, be provided with at least two damping devices, be used to alleviating the high speed Gas Flow, impact the vibrations that described connecting tube group inwall produces.
2. silencing type pressure regulating valve group according to claim 1 is characterized in that: described damping device from top to bottom is provided with successively and connects bearing, hydraulic damper and fixed bearing; Described connection bearing and described fixed bearing are all hinged with described hydraulic damper.
3. silencing type pressure regulating valve group according to claim 2, it is characterized in that: described connecting tube group comprises many connecting tubes and is erected at the connecting frame between each connecting tube; On described connecting tube, be provided with regulating valve; Between each described connecting tube, by connecting frame, interconnect.
4. silencing type pressure regulating valve group according to claim 3, it is characterized in that: described damping device is fixed by described connection bearing and described connecting frame.
5. silencing type pressure regulating valve group according to claim 4 is characterized in that: described connecting tube comprises valve pipeline section and diffusion pipeline section.
6. silencing type pressure regulating valve group according to claim 5, it is characterized in that: described the first valve module of voltage regulation, the second valve module of voltage regulation and baffler lower end be equipped with for the fixing base for supporting of brace foundation, between described base for supporting and described brace foundation, be provided with shock absorbing seat.
7. silencing type pressure regulating valve group according to claim 6, it is characterized in that: described shock absorbing seat is fixed by a plurality of stone bolt and described base for supporting that are preset in described brace foundation; In described shock absorbing seat, be provided with a plurality of be used to alleviating the Returnning spring of shock absorbing seat compressive deformation; Described Returnning spring correspondence is set on described stone bolt.
8. silencing type pressure regulating valve group according to claim 7, it is characterized in that: described Returnning spring is arranged with telescopic cover spare outward; Should flexible external member comprise lower guide sleeve and be sleeved on the upper telescopic cover in this time guide sleeve; Described lower guide sleeve and described brace foundation are fixed, and described upper telescopic cover and described base for supporting are fixed.
9. silencing type pressure regulating valve group according to claim 8 is characterized in that: described lower guide sleeve comprises the guiding jacket wall and is arranged on the interior stop lug of this guiding jacket wall bottom; Described upper telescopic cover comprises the outer stop lug that is placed in the flexible jacket wall in described guiding jacket wall and is arranged on this flexible jacket wall upper end.
10. according to claim 1-9 arbitrary described silencing type pressure regulating valve groups, it is characterized in that: described baffler is provided be used to absorbing the sound-absorbing sheet of noise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203317940U CN203297746U (en) | 2013-06-08 | 2013-06-08 | Noise-reduction type pressure regulating valve set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203317940U CN203297746U (en) | 2013-06-08 | 2013-06-08 | Noise-reduction type pressure regulating valve set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203297746U true CN203297746U (en) | 2013-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203317940U Expired - Lifetime CN203297746U (en) | 2013-06-08 | 2013-06-08 | Noise-reduction type pressure regulating valve set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203297746U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455706A (en) * | 2014-11-26 | 2015-03-25 | 苏州福润机械有限公司 | Shock-absorbing and heat-preserving butterfly valve |
| CN105819070A (en) * | 2016-04-29 | 2016-08-03 | 无锡港盛重型装备有限公司 | Hardware storage box with noise-reducing function |
-
2013
- 2013-06-08 CN CN2013203317940U patent/CN203297746U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455706A (en) * | 2014-11-26 | 2015-03-25 | 苏州福润机械有限公司 | Shock-absorbing and heat-preserving butterfly valve |
| CN105819070A (en) * | 2016-04-29 | 2016-08-03 | 无锡港盛重型装备有限公司 | Hardware storage box with noise-reducing function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 100101 Room 601, 6 / F, building 1, yard 8, Beichen East Road, Chaoyang District, Beijing Patentee after: Britian control equipment (Beijing) Co.,Ltd. Address before: 100101 building B, Huibin building, 8 Beichen East Road, Chaoyang District, Beijing 2011 Patentee before: LOFON CONTROL EQUIPMENT (BEIJING) Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131120 |
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| CX01 | Expiry of patent term |