CN103352988B - Pressure governor and valve element circle run-out detection device - Google Patents
Pressure governor and valve element circle run-out detection device Download PDFInfo
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- CN103352988B CN103352988B CN201310314928.2A CN201310314928A CN103352988B CN 103352988 B CN103352988 B CN 103352988B CN 201310314928 A CN201310314928 A CN 201310314928A CN 103352988 B CN103352988 B CN 103352988B
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- guided bearing
- bearing cover
- pressure governor
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- spool
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Abstract
A kind of pressure governor, comprise spool, spool comprises guided bearing cover, valve seat and multiple supporting gusset, valve seat has valve port, multiple supporting link of boards guided bearing cover and valve base inner wall, and guided bearing cover is become multiple passage with the region separation between valve base inner wall, multiple passage is connected with valve port.In addition, a kind of valve element circle run-out detection device is additionally provided.Above-mentioned pressure governor and valve element circle run-out detection device, can beat to the circle of spool and carry out independent detection, to ensure that the circle of spool is beated, eliminate the impact that correlated parts is beated along the circle of guided bearing axis on seal spool end face as the cumulative error of the part such as housing, spacer flanger, increase the rigidity of guided bearing cover, not yielding, improve the Security of pressure governor, and reduce manufacture cost.
Description
Technical field
The present invention relates to gas transmission and distribution apparatus field, particularly relate to a kind of pressure governor and valve element circle run-out detection device.
Background technique
At present, main flow pressure governor product similar both at home and abroad, as Italy flies Norval series voltage regulator difficult to understand, Italian Ta Talini MN-MF series voltage regulator, China peace of a specified duration RTZ-SP series voltage regulator etc.The structure basic simlarity of these pressure governors, all adopts the conventional construction pattern that guided bearing is separated with spool.In the Security of inefficacy guaranteeing pressure governor balance diaphragm, in above-mentioned three series product, only have Italy to fly Norval series voltage regulator difficult to understand and take corresponding measure, namely adopt safety joint discharge orifice technology.
There are more following problems in actual applications in above-mentioned traditional structural type:
1, in pressure governor assembly process, seal spool end face is beated along the circle of guided bearing axis and is difficult to ensure.Seal spool end face is beated along the circle of guided bearing axis and is directly affected the closedown performance of pressure governor, when adopting conventional construction pattern, must beat along the circle of guided bearing axis by Site Detection seal spool end face in installation process, operating difficulties, Installation and Debugging bother, and are unfavorable for the assembly quality controlling pressure governor.
2, because the manufacture cumulative error of correlated parts is difficult to control, when causing installing, seal spool end face is beated to become along the circle of guided bearing axis and is difficult to control.The manufacture cumulative error of correlated parts, as housing, spacer flanger etc., to beat along the circle of guided bearing axis to seal spool end face and all have a direct impact, the control that this circle of pressure governor is beated becomes complicated and is difficult to ensure.
When seal spool end face along the circle of guided bearing axis beat be difficult to ensure or control, the seal spool end face of pressure governor and the parallelism in valve pad rubber seal face cannot be guaranteed, when pressure governor cuts out, usually because sealing faying surface is not parallel, fit bad, cause seepage, the driving force of pressure governor main film need be strengthened, valve pad rubber seal face is made to produce larger amount of deformation, guarantee valve pad rubber seal face fits tightly seal spool end face, pressure governor cuts out completely, and this can cause the closing pressure of pressure governor higher.
3, the rigidity of guided bearing is poor, yielding.Adopt conventional construction pattern, because guided bearing is cantilever structure, only one end and spacer flanger screw thread glued joint, and guided bearing rigidity is poor, yielding.
4, the difficulty of processing of safety joint discharge orifice is large, and cost is high.The safety joint discharge orifice of Norval series voltage regulator is opened on coupling shaft, and is elongated hole, and difficulty of processing is large, and cost is high.
Summary of the invention
Based on this, be necessary for traditional pressure governor, in assembly process, seal spool end face is beated along the circle of guided bearing axis and is difficult to ensure, the seal spool end face caused because of the manufacture cumulative error of correlated parts is beated along the circle of guided bearing axis and is difficult to control, and poor, the yielding problem of the rigidity of guided bearing, provide a kind of and can ensure and be easy to control spool seal face is beated along the circle of guided bearing axis, the on-deformable pressure governor of guided bearing.
A kind of pressure governor, comprise spool, described spool comprises guided bearing cover, valve seat and multiple supporting gusset, described valve seat has valve port, guided bearing cover described in described multiple supporting link of boards and described valve base inner wall, and described guided bearing cover is become multiple passage with the region separation between described valve base inner wall, described multiple passage is connected with described valve port.
Wherein in an embodiment, also comprise coupling shaft and valve pad assembly, described coupling shaft is arranged in described guided bearing cover, described valve pad assembly is installed on described coupling shaft one end near described valve seat, for when described coupling shaft slides along described guided bearing cover with described coupling shaft synchronizing moving to open or to close described valve port.
Wherein in an embodiment, described valve pad assembly comprises valve pad, gland, the first seal ring and valve pad nut, described gland and described valve pad are sheathed on the end of described coupling shaft successively, described valve pad nut screws in the end of described coupling shaft and locks described valve pad, the external diameter of described gland is less than the internal diameter of described valve port and is greater than the internal diameter of described valve pad, the external diameter of described valve pad is greater than the internal diameter of described valve port, is provided with described first seal ring between described valve pad and valve pad nut.
Wherein in an embodiment, the sidewall of described guided bearing cover is provided with safety joint discharge orifice, described spool also comprises the second seal ring, described second seal ring is installed on the inwall of one end of the close described valve seat of described guided bearing cover and is sheathed on described coupling shaft, and described safety joint discharge orifice is positioned at the side of described second seal ring away from described valve seat.
Wherein in an embodiment, described spool also comprises two guide rings, and described two guide rings are installed on the inwall at described guided bearing cover two ends respectively and are sheathed on described coupling shaft.
Wherein in an embodiment, described pressure governor also comprises actuator chamber and balance diaphragm, and described safety joint discharge orifice is communicated to the side of described balance diaphragm via described guided bearing cover, and the opposite side of described balance diaphragm is actuator chamber.
Wherein in an embodiment, the diameter of described safety joint discharge orifice is 1 ~ 3 millimeter.
Wherein in an embodiment, also comprise spacer flanger, housing and the 3rd seal ring, described spacer flanger is installed on the top of described housing, described spacer flanger has attachment hole, described guided bearing cover is installed in described attachment hole away from one end of described valve seat, described 3rd seal ring seals the junction surface of described guided bearing cover and described attachment hole, described housing has suction chamber, discharge chamber and internal partition wall, described internal partition wall splits described suction chamber and described discharge chamber, described valve seat is installed in described internal partition wall, and be communicated with described suction chamber and described discharge chamber by described multiple passage with described valve port, the attachment face of described valve seat and described internal partition wall is provided with the 4th seal ring.
Wherein in an embodiment, described guided bearing cover is coaxially arranged with described valve seat, and described supporting gusset is 3 ~ 9 pieces.
In addition, a kind of valve element circle run-out detection device is additionally provided.
A kind of valve element circle run-out detection device, circle for the spool detecting pressure governor described above is beated, it is characterized in that, comprise deflection instrument, air plug gauge and dial gauge, described mandrel is arranged in described guided bearing cover with in valve seat, and overlap endoporus tensioning with described guided bearing, the two ends of described mandrel have center hole, described deflection instrument adopts the top center hole location propping up described air plug gauge two ends, two ends, described dial gauge by support installing on described deflection instrument, described dial gauge has detecting head, described detecting head extends to the end face that described valve seat has described valve port.
Above-mentioned pressure governor and valve element circle run-out detection device, spool integrates guided bearing cover and valve seat, before installation, can beat to the circle of spool and carry out independent detection, to ensure that the circle of spool is beated, detect and simply, without the need to Site Detection in installation process debug, ensure that the assembly quality of pressure governor.Simultaneously, beat due to circle and be guaranteed, after installation, coupling shaft is along when sliding in guided bearing cover and drive valve pad close valve orifice, and the bottom surface of valve seat is seal spool end face, and the parallelism in the rubber seal face of seal spool end face and valve pad is better, laminating better, avoid seepage, make valve pad rubber seal face produce larger amount of deformation without the need to the driving force by specially strengthening pressure governor main film and ensure that pressure governor cuts out completely, avoid the higher of the closing pressure of pressure governor.Even if the cumulative error of correlated parts is larger, also the rubber seal face of valve pad and the parallelism of seal spool end face can not be affected, at all can not increase circle to beat, eliminate the impact that correlated parts is beated along the circle of guided bearing axis on seal spool end face as the cumulative error of the part such as housing, spacer flanger.In addition, guided bearing cover is connected as a single entity with valve seat, increases rigidity, not yielding.
Accompanying drawing explanation
Fig. 1 is the structural representation of the pressure governor of an embodiment;
Fig. 2 is the structural representation of spool in Fig. 1;
Fig. 3 is the plan view of spool in Fig. 2;
Fig. 4 is the enlarged view of local A in Fig. 1;
Fig. 5 is that valve element circle run-out detection device justifies the phase diagram of glitch detection to spool.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 4, in one embodiment, a kind of pressure governor, comprises spool 110.Spool 110 comprises guided bearing cover 112, valve seat 114 and multiple supporting gusset 116.Valve seat 114 has valve port 1142.Multiple supporting gusset 116 connects guided bearing cover 112 and valve seat 114 inwall, and guided bearing cover 112 is become multiple passage 118 with the region separation between valve seat 114 inwall, and multiple passage 118 is connected with valve port 1142.Usually, guided bearing cover 112 is coaxially arranged with valve seat 114, and supporting gusset 116 is generally 3 ~ 9 pieces., concrete quantity should be determined according to the size of spool 110 and force-bearing situation.
Above-mentioned pressure governor, spool 110 integrates guided bearing cover 112 and valve seat 114, before installation, can beat to the circle of spool 110 and carry out independent detection, to ensure that the circle of spool is beated, detect simply, without the need to the debugging of Site Detection in installation process, ensure that the assembly quality of pressure governor.
In the particular embodiment, pressure governor also comprises coupling shaft 120 and valve pad assembly 130.Coupling shaft 120 be arranged in guided bearing cover 112 in, valve pad assembly 130 is installed on coupling shaft 120 one end near valve seat 114, for coupling shaft 120 along guided bearing cover 112 slide time with coupling shaft 120 synchronizing moving with open or close port 1142.Wherein, valve pad assembly 130 comprises valve pad 132, gland 134, first seal ring 136 and valve pad nut 138.Gland 134 and valve pad 132 are sheathed on the end of coupling shaft 120 successively, and valve pad nut 138 screws in the end of coupling shaft 120 and locks valve pad 132.The external diameter of gland 134 is less than the internal diameter of valve port 1142 and is greater than the internal diameter of valve pad 132, and the external diameter of valve pad 132 is greater than the internal diameter of valve port 1142, is provided with the first seal ring 136 between valve pad 132 and valve pad nut 138.Valve pad 132 is provided with rubber seal end face.
Beat due to circle and be guaranteed, after spool 110 is installed, when coupling shaft 120 slides along guided bearing cover 112 and drives valve pad 132 close port 1142, the bottom surface of valve seat 114, namely the plane at valve port 1142 place is the seal face of spool 110, the parallelism in the seal face of spool 110 and the rubber seal face of valve pad 132 is better, laminating better, avoid seepage, make the rubber seal face of valve pad 132 produce larger amount of deformation without the need to the driving force by specially strengthening pressure governor main film 50 to ensure that pressure governor cuts out completely, avoid the higher of the closing pressure of pressure governor.Even if the cumulative error of correlated parts is larger, also the parallelism of the seal face of valve pad 132 rubber seal face and spool 110 can not be affected, at all can not increase circle to beat, eliminate the impact that correlated parts is beated along the circle of guided bearing axis on seal spool end face as the cumulative error of the part such as housing, spacer flanger.In addition, guided bearing cover 112 is connected as a single entity with valve seat 114, increases rigidity, not yielding.
In the particular embodiment, pressure governor also comprises spacer flanger 140, housing 150 and the 3rd seal ring 142.Spacer flanger 140 is installed on the top of housing 150.Spacer flanger 140 has attachment hole, and guided bearing cover 112 is installed in attachment hole away from one end of valve seat 114.3rd seal ring 142 seals the junction surface of guided bearing cover 112 and attachment hole.Housing 150 has suction chamber 152, discharge chamber 154 and internal partition wall 156.Internal partition wall 156 splits suction chamber 152 and discharge chamber 154, and valve seat 114 is installed in internal partition wall 156, and is communicated with suction chamber 152 and discharge chamber 154 by multiple passage 118 with valve port 1142, and valve seat 114 is provided with the 4th seal ring 157 with the attachment face of internal partition wall 156.
In the particular embodiment, the sidewall of guided bearing cover 112 is provided with safety joint discharge orifice 1122.Usually, the diameter of safety joint discharge orifice 1122 is 1 ~ 3 millimeter.Spool 110 also comprises the second seal ring 111 and two guide rings 113a, 113b.Second seal ring 111 is installed on the guided bearing inwall of cover 112 near one end of valve seat 114 and is sheathed on coupling shaft 120, and safety joint discharge orifice 1122 is positioned at the side of seal ring 111 away from valve seat 114.Two guide rings 113a, 113b are installed on guided bearing respectively and overlap the inwall at 112 two ends and be sheathed on coupling shaft 120.Pressure governor also comprises actuator chamber 160 and balance diaphragm 170.Safety joint discharge orifice 1122 is communicated to the side of balance diaphragm 170 via guided bearing cover 112, and the opposite side of balance diaphragm 170 is actuator chamber 160, and safety joint discharge orifice 1122 is connected with suction chamber 152.Guided bearing cover 112 offers safety joint discharge orifice 1122 by machine-tooled method, the size of safety joint discharge orifice 1122 should guarantee that pressure governor is after balance diaphragm 170 breaks, effectively can reduce the increasing degree of pressure governor actuator chamber 160 internal pressure, when guaranteeing that pressure governor cuts out because driving pressure raises, the rubber seal face of valve pad 132 can not be caused to extrude crack damage and leak gas because driving pressure is too high, simultaneously, effectively can reduce the rate of climb of pressure governor outlet pressure, make the closedown response time of the raising speed of outlet pressure lower than pressure governor and the response time of Emergeny Cutoff Valves, guarantee that pressure governor and Emergeny Cutoff Valves have enough response times, timely response, pressure governor cuts out and emergency shutoff device cuts off, ensure safety.Above-mentioned safety joint discharge orifice 1122, overlaps 112 sidewalls along guided bearing and directly offers, and processing is simple, and cost is lower.
As shown in Figure 5, a kind of valve element circle run-out detection device, the circle for the spool 110 detecting above-mentioned pressure governor is beated, and comprises deflection instrument 210, air plug gauge 220 and dial gauge 230.Mandrel 220 is located at guided bearing cover 112 with in valve seat 114, and overlap 112 endoporus tensionings with guided bearing, the two ends of mandrel 220 have center hole, and deflection instrument 210 utilizes the top center hole location propping up air plug gauge 220 two ends, two ends.Dial gauge 230 is installed on deflection instrument 210 by support 240.Dial gauge 230 has detecting head 232, and detecting head 232 extends to the seal face of valve seat 114.With hand rotation measuring mandrel 220, spool 110 is followed air plug gauge 220 and is rotated, and the circle just can being measured spool 110 by detecting head 232 is intuitively beated and indicated by dial gauge 230, thus effectively ensure that the circle of spool 110 is beated.
The above embodiment only have expressed several mode of execution of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. a pressure governor, it is characterized in that, comprise spool, described spool comprises guided bearing cover, valve seat and multiple supporting gusset, described valve seat has valve port, guided bearing cover described in described multiple supporting link of boards and described valve base inner wall, and described guided bearing cover is become multiple passage with the region separation between described valve base inner wall, described multiple passage is connected with described valve port.
2. pressure governor according to claim 1, it is characterized in that, also comprise coupling shaft and valve pad assembly, described coupling shaft is arranged in described guided bearing cover, described valve pad assembly is installed on described coupling shaft one end near described valve seat, for when described coupling shaft slides along described guided bearing cover with described coupling shaft synchronizing moving to open or to close described valve port.
3. pressure governor according to claim 2, it is characterized in that, described valve pad assembly comprises valve pad, gland, the first seal ring and valve pad nut, described gland and described valve pad are sheathed on the end of described coupling shaft successively, described valve pad nut screws in the end of described coupling shaft and locks described valve pad, the external diameter of described gland is less than the internal diameter of described valve port and is greater than the internal diameter of described valve pad, the external diameter of described valve pad is greater than the internal diameter of described valve port, is provided with described first seal ring between described valve pad and valve pad nut.
4. pressure governor according to claim 2, it is characterized in that, the sidewall of described guided bearing cover is provided with safety joint discharge orifice, described spool also comprises the second seal ring, described second seal ring is installed on the inwall of one end of the close described valve seat of described guided bearing cover and is sheathed on described coupling shaft, and described safety joint discharge orifice is positioned at the side of described second seal ring away from described valve seat.
5. pressure governor according to claim 4, is characterized in that, described spool also comprises two guide rings, and described two guide rings are installed on the inwall at described guided bearing cover two ends respectively and are sheathed on described coupling shaft.
6. pressure governor according to claim 4, is characterized in that, described pressure governor also comprises actuator chamber and balance diaphragm, and described safety joint discharge orifice is communicated to the side of described balance diaphragm via described guided bearing cover, and the opposite side of described balance diaphragm is actuator chamber.
7. pressure governor according to claim 4, is characterized in that, the diameter of described safety joint discharge orifice is 1 ~ 3 millimeter.
8. pressure governor according to claim 1, it is characterized in that, also comprise spacer flanger, housing and the 3rd seal ring, described spacer flanger is installed on the top of described housing, described spacer flanger has attachment hole, described guided bearing cover is installed in described attachment hole away from one end of described valve seat, described 3rd seal ring seals the junction surface of described guided bearing cover and described attachment hole, described housing has suction chamber, discharge chamber and internal partition wall, described internal partition wall splits described suction chamber and described discharge chamber, described valve seat is installed in described internal partition wall, and be communicated with described suction chamber and described discharge chamber by described multiple passage with described valve port, the attachment face of described valve seat and described internal partition wall is provided with the 4th seal ring.
9. pressure governor according to claim 1, is characterized in that, described guided bearing cover is coaxially arranged with described valve seat, and described supporting gusset is 3 ~ 9 pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310314928.2A CN103352988B (en) | 2013-07-24 | 2013-07-24 | Pressure governor and valve element circle run-out detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310314928.2A CN103352988B (en) | 2013-07-24 | 2013-07-24 | Pressure governor and valve element circle run-out detection device |
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| Publication Number | Publication Date |
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| CN103352988A CN103352988A (en) | 2013-10-16 |
| CN103352988B true CN103352988B (en) | 2015-09-16 |
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| CN201310314928.2A Active CN103352988B (en) | 2013-07-24 | 2013-07-24 | Pressure governor and valve element circle run-out detection device |
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| CN105135971A (en) * | 2015-09-02 | 2015-12-09 | 吴忠仪表有限责任公司 | Movable spherical core comprehensive error detecting device supported by double vertical columns |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2295084Y (en) * | 1997-03-11 | 1998-10-21 | 杨方平 | Gas pressure regulator |
| JP2004156741A (en) * | 2002-11-07 | 2004-06-03 | Matsushita Electric Ind Co Ltd | Water control valve |
| CN201672900U (en) * | 2010-05-05 | 2010-12-15 | 湖南凯斯机械股份有限公司 | Detection gauge for detecting shaft parts with conical surfaces |
| CN203477362U (en) * | 2013-07-24 | 2014-03-12 | 上海航天能源股份有限公司 | Pressure regulator and circular runout detection device of valve core |
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