CN103292768B - A kind of pick-up unit for detecting flange seal hermetic separation amount - Google Patents
A kind of pick-up unit for detecting flange seal hermetic separation amount Download PDFInfo
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- CN103292768B CN103292768B CN201310219158.3A CN201310219158A CN103292768B CN 103292768 B CN103292768 B CN 103292768B CN 201310219158 A CN201310219158 A CN 201310219158A CN 103292768 B CN103292768 B CN 103292768B
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Abstract
<b> the invention discloses </b><bGreatT.Gre aT.GT mono-kind for detecting the pick-up unit of flange seal hermetic separation amount, wherein by arranging displacement transmission plate between vessel flange and end cap flange, displacement transmission plate and vessel flange end face are sealed by seal and arrange, seal an end face of vessel flange contact forming surface sealing or linear sealing, the end face that displacement transmission plate is adjacent with end cap flange has the displacement detecting point consistent with the some axial displacement in seal central diameter on same xsect, the axial displacement of above-mentioned displacement detecting point is detected again by arranging detection components, testing result is by data acquisition system, so just, the hermetic separation amount of flange and seal can be obtained easily, thus provide Research foundation for the relation between the hermetic separation amount of research flange seal and seal leakage amount.This detection method is simple and convenient, and operability is high.</b>
Description
Technical field
the present invention relates to a kind of pick-up unit for detecting flange seal hermetic separation amount.
Background technology
in the vessel flanges of industrial sector such as nuclear power, chemical industry, oil refining, petrochemical industry, metallurgy, boats and ships, the energy and the seal operation environment of end cap flange, under the effect of the factor such as pressure medium, temperature, two panels joint flange is made to be tending towards separately and to dehisce under the axial force that pressure medium produces and fastening bolt improve with temperature and produce lax condition, form certain fractional dose, reduce effective decrement of seal, cause the decay of seal Sealing Stress.When fractional dose exceedes a certain critical value, the effective value of Sealing Stress also reaches critical value, and link will leak, and is even blown out by seal, causes the inefficacy sealed.Therefore, detect the hermetic separation amount of flange seal, and the relation studied between sealing fractional dose and seal leakage amount is to guarantee that sealing effective fractional dose critical value is ensure to seal to continue reliable gordian technique.
Summary of the invention
the object of this invention is to provide a kind of pick-up unit for detecting flange seal hermetic separation amount to obtain the hermetic separation amount of flange and seal, thus provide Research foundation for the relation studied between above-mentioned hermetic separation amount and seal leakage amount.
for achieving the above object, the technical solution used in the present invention is:
a kind of pick-up unit for detecting flange seal hermetic separation amount, comprise the vessel flange and end cap flange that are fixedly connected, described vessel flange has equipment cavity, described pick-up unit also comprises the displacement transmission plate be located in regularly between described vessel flange and described end cap flange, seal is provided with between described displacement transmission plate and described vessel flange, the described seal forming surface that contacts with described vessel flange seals or linear sealing, the sealing station that described seal contacts with described vessel flange is positioned at outside the circumferential edge of described equipment cavity, end face adjacent with described displacement transmission plate on described end cap flange is concave panel, end face relative with described concave panel in described displacement transmission plate has displacement detecting point, the line that described seal central diameter is put for described displacement detecting point and same xsect and the axial line of described vessel flange are parallel to each other, described pick-up unit also comprises the column be fixedly arranged on described vessel flange, be fixedly arranged on the support on described column, at least one group for detecting the detection components of described displacement detecting point axial displacement, and be located on described support for obtaining the data acquisition system (DAS) of described detection components testing result.
preferably, described detection components comprises the first test rod, described end cap flange offers the first through hole run through vertically, described first test rod is located in described first through hole, described first test rod has the first spring fitting face, described first test rod is arranged with first spring that can produce axial elasticity restoring force, first gland, described first gland is fixedly attached on described end cap flange, the two ends of described first spring are conflicted in described first spring fitting face respectively, on described first gland, to conflict in described displacement transmission plate and inconsistent with described displacement detecting point in one end of described first test rod, the other end of described first test rod forms the first test side, described detection components also comprises the first displacement transducer for detecting described first test side axial displacement be located at regularly on described support.
further preferably, inconsistent with described displacement transmission plate on described first test rod end shape spherical in shape.
further preferably, described end cap flange also offers the second through hole run through vertically, described displacement transmission plate offers the third through-hole run through vertically, described third through-hole and described second through hole extend along same axis direction, described detection components also comprises rod-type second test rod identical with described first test rod, described second test rod is located in described second through hole vertically, in described third through-hole, the axial line of described second test rod and described first test rod is parallel to each other, described second test rod has the second spring fitting face, described second test rod is arranged with second spring that can produce axial elasticity restoring force, second gland, described second gland is fixedly attached on described end cap flange, the two ends of described second spring are conflicted in described second spring fitting face respectively, on described second gland, conflict on the end face of described vessel flange in one end of described second test rod, the other end of described second test rod forms the second test side, described support is also fixedly provided with the second displacement sensor for detecting described second test side axial displacement.
preferably, described end cap flange offers the fourth hole run through vertically, described detection components comprises the triple motion sensor that can detect described displacement detecting point axial displacement through described fourth hole, and described triple motion sensor is arranged on the bracket regularly.
due to the utilization of technique scheme, the present invention compared with prior art has following advantages: a kind of pick-up unit for detecting flange seal hermetic separation amount of the present invention, wherein by arranging displacement transmission plate between vessel flange and end cap flange, displacement transmission plate and vessel flange end face are sealed by seal and arrange, seal an end face of vessel flange contact forming surface sealing or linear sealing, the end face that displacement transmission plate is adjacent with end cap flange has the displacement detecting point consistent with the some axial displacement in seal central diameter on same xsect, the axial displacement of above-mentioned displacement detecting point is detected again by arranging detection components, testing result is by data acquisition system, so just, the hermetic separation amount of flange and seal can be obtained easily, thus provide Research foundation for the relation between the hermetic separation amount of research flange seal and seal leakage amount.This detection method is simple and convenient, and operability is high.
Accompanying drawing explanation
accompanying drawing 1 is the transversal profile schematic diagram of detection system in the specific embodiment of the invention 1;
accompanying drawing 2 is A portion enlarged diagram in accompanying drawing 1;
accompanying drawing 3 is the transversal profile schematic diagram of detection system in the specific embodiment of the invention 2;
accompanying drawing 4 is B portion enlarged diagram in accompanying drawing 3;
accompanying drawing 5 is the transversal profile schematic diagram of detection system in the specific embodiment of the invention 3.
Embodiment
below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is further elaborated.
specific embodiment 1:
see a kind of pick-up unit for detecting flange seal hermetic separation amount shown in Fig. 1 ~ 2, this device comprises vessel flange 1, end cap flange 2, displacement transmission plate 3, displacement transmission plate 3 is between vessel flange 1 and end cap flange 2, and vessel flange 1 and end cap flange 2 are fixedly connected with and displacement transmission plate 3 are pressed in regularly between vessel flange 1 and end cap flange 2.Vessel flange 1 has equipment cavity 11, and when vessel flange 1 works, actuating medium fills in equipment cavity 11.Seal 4 is also provided with between displacement transmission plate 3 and vessel flange 1, seal 4 forming surface that contacts with vessel flange 1 seals or linear sealing, the sealing station that seal 4 contacts with vessel flange 1 is positioned at outside the circumferential edge of equipment cavity 11, so just can play sealing function and prevent the actuating medium in equipment cavity 11 from overflowing.Seal 4 can adopt as wire seal such as C type sealing ring, O type sealing rings, also can adopt as face seals such as plain cushion, metallic graphite carbon pad, wound gaskets.What adopt in the present embodiment is O type circle, and one end of displacement transmission plate 3 offers annular groove 31, the oral area of this annular groove 31 towards vessel flange 1, O type circle partial receipt in annular groove 31.
shown in Fig. 1 ~ 2, in order to store certain displacement when axial displacement occurs for press seal part 4 and displacement transmission plate 3, end face adjacent with displacement transmission plate 3 on end cap flange 2 is set to concave panel, the end face that displacement transmission plate 3 is relative with above-mentioned concave panel has displacement detecting point C, on this displacement detecting point C and same xsect, the upper line of point of one of them seal 4 central diameter (seal 4 center circle radius) and the axial line of vessel flange 1 are parallel to each other, detection displacement check point C displacement variable vertically can know the hermetic separation amount between vessel flange 1 and seal 4.When vessel flange 1 is fixedly connected with end cap flange 2, need to ensure that the deflection at displacement detecting point C place is as far as possible close to 0 value, the error produced during to reduce pretension.
this pick-up unit also comprising the column 5 be fixedly arranged on vessel flange 1, the support 6 be fixedly arranged on column 5, for detecting the detection components 7 of displacement check point C change in displacement vertically, and being located at the data acquisition system (DAS) 8 for obtaining detection components 7 testing result on support 6.Detected the axial displacement of displacement check point C by detection components 7, the result detected is gathered by data acquisition system (DAS) 8.In the process detected, end face adjacent with displacement transmission plate 3 on vessel flange 1 is as the reference field detected.
shown in Fig. 1 ~ 2, detection components 7 comprises the first test rod 71 and the second test rod 73, and arranges the first displacement transducer 72 on the frame 6 and second displacement sensor 74.First test rod 71 is parallel to each other with the axial line of the second test rod 73 and both rod-type are identical, namely both diameter, length must be identical.End cap flange 2 offers the first through hole 22 and the second through hole 23 run through vertically, displacement transmission plate 3 offers third through-hole 32, the axial line of third through-hole 32 and the second through hole 23 extends along same rectilinear direction, first test rod 71 is located in the first through hole 22, first test rod 71 is in ladder shaft-like, large-diameter end and small axle diameter end form the first spring fitting face, this first test rod 71 is arranged with the first spring 75, first gland 76, first gland 76 is fixedly connected on end cap flange 2 outer end, the two ends of the first spring 75 are conflicted in above-mentioned first spring fitting face respectively, on first gland 76, like this due to the elastic acting force of the first spring 75, can conflict all the time in displacement transmission plate 3 in one end of first test rod 71, when arranging, the first test rod 71 is conflicted to have on the bottom of displacement transmission plate 3 and is a bit conflicted on displacement check point C, the bottom of the first test rod 71 can be set to ball shape, such first test rod 71 directly contacts at displacement detecting point C place time inconsistent with displacement transmission plate 3.After displacement detecting point C is subjected to displacement vertically, can there is corresponding axial displacement in the first test rod 71 under the resilient force of the first spring 75, and namely the axial displacement of displacement check point C is passed on the first test rod 71.First test side is formed on the top that the first test rod 71 exposes the first through hole 22, and namely the first displacement transducer 71 detects the axial displacement of the first test side.Second test rod 73 is located in the second through hole 23, third through-hole 32 vertically.Second test rod 73 has the second spring fitting face, by arranging the second spring 77 and described second test rod 73 is pressed together in the second through hole 23, third through-hole 32 by the second gland 78, and conflicted on the end face of vessel flange 1 in the bottom of the second test rod 73, its other end forms the second test side, and second displacement sensor 74 detects the axial displacement of the second test side.This testing result is the axial deformation amount that the second test rod 73 self occurs under the change of the condition such as temperature, pressure medium, because the second test rod 73 is identical with the rod-type of the first test rod 71, this axial deflection is consistent with the axial deflection of the first test rod 71, considers that the axial deflection of the first test rod 71 self can improve the precision of detection in testing process.The testing result of the first displacement transducer 71 and second displacement sensor 74 is gathered by data acquisition system (DAS) 8.
when this pick-up unit is applied to and detects flange seal hermetic separation amount, first displacement transducer 71, second displacement sensor 73 detect the axial displacement of the first test side, the second test side respectively, and data acquisition system (DAS) 8 gathers the testing result T of the first displacement transducer 71 respectively
1
, second displacement sensor 73 testing result T
2
, like this by calculating the hermetic separation amount T=T that just can obtain flange seal part
2
-T
1
.
specific embodiment 2:
see shown in Fig. 3, Fig. 4 being another embodiment of the present invention, the difference of the present embodiment and embodiment 1 is the setting of detection components 7.In the present embodiment, detection components 7 comprises the triple motion sensor 75 be fixedly installed on the frame 6, end cap flange 2 offers the fourth hole 24 run through vertically, triple motion sensor 75 can detect the axial displacement of displacement check point C through fourth hole 24, the testing result of triple motion sensor 75 is gathered by data acquisition system (DAS) 8, directly can obtain the hermetic separation amount of flange seal 4 like this, namely the hermetic separation amount of flange seal part is T=T
3
.This kind of pick-up unit is adopted to carry out detecting the structure of relative embodiment 1 device relatively simply, but higher to the requirement of triple motion sensor 75, and the cost of triple motion sensor 75 is also higher.
specific embodiment 3:
shown in Figure 5 is another embodiment of the present invention, the difference of the present embodiment and embodiment 2 is the setting of seal 4, in the present embodiment, what seal 4 adopted is non-metallic gasket, this non-metallic gasket to be arranged between displacement transmission plate 3 and vessel flange 1 and and between vessel flange 1 forming surface seal.Certainly, need be arranged between displacement transmission plate 3 and vessel flange 1 according to the design feature of non-metallic gasket self when arranging.
above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (5)
1. one kind for detecting the pick-up unit of flange seal hermetic separation amount, comprise the vessel flange and end cap flange that are fixedly connected, described vessel flange has equipment cavity, it is characterized in that: described pick-up unit also comprises the displacement transmission plate be located in regularly between described vessel flange and described end cap flange, seal is provided with between described displacement transmission plate and described vessel flange, the described seal forming surface that contacts with described vessel flange seals or linear sealing, the sealing station that described seal contacts with described vessel flange is positioned at outside the circumferential edge of described equipment cavity, end face adjacent with described displacement transmission plate on described end cap flange is concave panel, end face relative with described concave panel in described displacement transmission plate has displacement detecting point, the line that described seal central diameter is put for described displacement detecting point and same xsect and the axial line of described vessel flange are parallel to each other, described pick-up unit also comprises the column be fixedly arranged on described vessel flange, be fixedly arranged on the support on described column, at least one group for detecting the detection components of described displacement detecting point axial displacement, and be located on described support for obtaining the data acquisition system (DAS) of described detection components testing result.
2. a kind of pick-up unit for detecting flange seal hermetic separation amount according to claim 1, it is characterized in that: described detection components comprises the first test rod, described end cap flange offers the first through hole run through vertically, described first test rod is located in described first through hole, described first test rod has the first spring fitting face, described first test rod is arranged with first spring that can produce axial elasticity restoring force, first gland, described first gland is fixedly attached on described end cap flange, the two ends of described first spring are conflicted in described first spring fitting face respectively, on described first gland, to conflict in described displacement transmission plate and inconsistent with described displacement detecting point in one end of described first test rod, the other end of described first test rod forms the first test side, described detection components also comprises the first displacement transducer for detecting described first test side axial displacement be located at regularly on described support.
3. a kind of pick-up unit for detecting flange seal hermetic separation amount according to claim 2, is characterized in that: end shape spherical in shape inconsistent with described displacement transmission plate on described first test rod.
4. a kind of pick-up unit for detecting flange seal hermetic separation amount according to claim 2, it is characterized in that: described end cap flange also offers the second through hole run through vertically, described displacement transmission plate offers the third through-hole run through vertically, described third through-hole and described second through hole extend along same axis direction, described detection components also comprises rod-type second test rod identical with described first test rod, described second test rod is located in described second through hole vertically, in described third through-hole, the axial line of described second test rod and described first test rod is parallel to each other, described second test rod has the second spring fitting face, described second test rod is arranged with second spring that can produce axial elasticity restoring force, second gland, described second gland is fixedly attached on described end cap flange, the two ends of described second spring are conflicted in described second spring fitting face respectively, on described second gland, conflict on the end face of described vessel flange in one end of described second test rod, the other end of described second test rod forms the second test side, described support is also fixedly provided with the second displacement sensor for detecting described second test side axial displacement.
5. a kind of pick-up unit for detecting flange seal hermetic separation amount according to claim 1, it is characterized in that: described end cap flange offers the fourth hole run through vertically, described detection components comprises the triple motion sensor that can detect described displacement detecting point axial displacement through described fourth hole, and described triple motion sensor is arranged on the bracket regularly.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310219158.3A CN103292768B (en) | 2013-06-04 | 2013-06-04 | A kind of pick-up unit for detecting flange seal hermetic separation amount |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310219158.3A CN103292768B (en) | 2013-06-04 | 2013-06-04 | A kind of pick-up unit for detecting flange seal hermetic separation amount |
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| CN103292768A CN103292768A (en) | 2013-09-11 |
| CN103292768B true CN103292768B (en) | 2015-11-18 |
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| CN201310219158.3A Active CN103292768B (en) | 2013-06-04 | 2013-06-04 | A kind of pick-up unit for detecting flange seal hermetic separation amount |
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Citations (5)
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| JPH08338704A (en) * | 1995-06-13 | 1996-12-24 | Sanmei Denki Kk | Device and method for measuring distance between faces |
| DE4240599B4 (en) * | 1992-12-03 | 2006-06-14 | Wabco Gmbh & Co.Ohg | Device for detecting relative movements |
| CN2919334Y (en) * | 2006-06-11 | 2007-07-04 | 上海锅炉厂有限公司 | Gap sensor for leak control system of air preheater |
| CN101799349A (en) * | 2010-04-07 | 2010-08-11 | 苏州宝骅机械技术有限公司 | Device and method for detecting sealing property of sealing component |
| CN203323730U (en) * | 2013-06-04 | 2013-12-04 | 苏州宝骅机械技术有限公司 | Detection device for detecting the sealing separation amount of flange and sealing piece |
-
2013
- 2013-06-04 CN CN201310219158.3A patent/CN103292768B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4240599B4 (en) * | 1992-12-03 | 2006-06-14 | Wabco Gmbh & Co.Ohg | Device for detecting relative movements |
| JPH08338704A (en) * | 1995-06-13 | 1996-12-24 | Sanmei Denki Kk | Device and method for measuring distance between faces |
| CN2919334Y (en) * | 2006-06-11 | 2007-07-04 | 上海锅炉厂有限公司 | Gap sensor for leak control system of air preheater |
| CN101799349A (en) * | 2010-04-07 | 2010-08-11 | 苏州宝骅机械技术有限公司 | Device and method for detecting sealing property of sealing component |
| CN203323730U (en) * | 2013-06-04 | 2013-12-04 | 苏州宝骅机械技术有限公司 | Detection device for detecting the sealing separation amount of flange and sealing piece |
Non-Patent Citations (1)
| Title |
|---|
| 圆盘台架O形环许用回弹及密封特性的试验研究;盛贤科等;《核动力工程》;19871028;第8卷(第5期);第48-55页 * |
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| CN103292768A (en) | 2013-09-11 |
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Address after: Shuangfeng town Taicang city Suzhou City, Jiangsu province 215415 rich economic development zone Co-patentee after: Zhongkehua Nuclear Power Technology Institute Co., Ltd. Patentee after: Suzhou Bao Hua sealing Polytron Technologies Inc Address before: Shuangfeng town Taicang city Suzhou City, Jiangsu province 215415 rich economic development zone Co-patentee before: Zhongkehua Nuclear Power Technology Institute Co., Ltd. Patentee before: Suzhou Baohua Mechanical Technology Co., Ltd. |
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Address after: Shuangfeng town Taicang city Suzhou City, Jiangsu province 215415 rich economic development zone Co-patentee after: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Patentee after: Suzhou Bao Hua sealing Polytron Technologies Inc Address before: Shuangfeng town Taicang city Suzhou City, Jiangsu province 215415 rich economic development zone Co-patentee before: Zhongkehua Nuclear Power Technology Institute Co., Ltd. Patentee before: Suzhou Bao Hua sealing Polytron Technologies Inc |