CN1073211C - 具有螺纹环的压力套筒 - Google Patents
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
- G01L23/221—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines
- G01L23/222—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines using piezoelectric devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
- G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
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Abstract
特别用于吸振器的压力套筒,具有直接或间接的固定件,它穿过压力套筒的中心凹槽(12),具有接触面(3)的压力套筒(2)紧固在振动的结构件上。在压力套筒的螺纹环(20)下方安置检测装置(6)例如压电陶瓷片,环(20)又作为在弹簧(8)压力下固定的振动质量(7)的限位件。螺纹环(20)在其离开振动质量件(7)的一侧具有轴向凸出附加件(21),它与压力套筒周围的凹槽(22)一起形成迷宫式密封(23)。
Description
本发明涉及一种特别是用于吸振器的套筒套筒,包括:直接或间接的固定件,它穿过压力套筒的中心凹口,具有接触面的压力套筒紧固到产生振动的结构件上;检测装置,它通过轴向预紧力保持在压力套筒的径向外部;在压力套筒上的作为限位件的螺纹环,用于通过弹簧之压力定位的振动质量件,该质量件通过检测装置设置;通过注塑工艺在压力套筒周围形成的塑料壳体。
DE-OS 4403660公开了一种用于内燃发动机的爆燃传感器的压力套筒,它通过接触区域固定到要检测振动的结构件上。在这检测的振动是内燃发动机工作时的爆燃噪声,它们通过压力套筒传到作为爆燃传感器的压电陶瓷的吸振器上并被转换成可分析的输出信号。把这种类型的爆燃传感器安装或夹装到压力套筒上并固定到振动结构件上时会对制造方式以及运行中连接的测定线路之瞬时误差测量和故障产生很大的影响。
公知的压力套筒一般由很抗压的硬材料如钢制成,以便在相当大挤压以及温度变化条件下保证可靠的测量,将压力套筒和传感器一同夹装封闭的壳体一般由塑料如聚氨酯(PUR)或玻璃纤维加强的尼龙(PA66 GF35)制成。例如从EP0211019131公开的内容可知,这些不同的部件通过相应设有螺纹结构或通过迷宫式密封可以互相固接并且也不会由于温度的影响对其连接产生明显影响。
根据本发明,提供一种特别是用于吸振器的套筒,包括:直接或间接的固定件,它穿过压力套筒的中心凹口,具有接触面的压力套筒紧固到产生振动的结构件上;检测装置,它通过轴向预紧力保持在压力套筒的径向外部;在压力套筒上的作为限位件的螺纹环,用于通过弹簧之压力定位的振动质量件,该质量件通过检测装置设置;通过注塑工艺在压力套筒周围形成的塑料壳体;其中,螺纹环在离开振动质量件的一侧具有轴向凸出附加件,它与至少一个在压力套筒圆周上的里边对置凹槽一起形成一迷宫式密封;通过注塑工艺,塑料质量可密封地填入迷宫式密封中。
在上述的压力套筒中,壳体的塑料可以是聚氨酯(PUR)。
在上述的压力套筒中,壳体的塑料可以是玻璃纤维强化的尼龙(PA66 GF35)。
在上述的压力套筒中,压力套筒最好由钢制成。
在上述的压力套筒中,压力套筒最好由黄铜制成。
在上述的压力套筒中,检测装置是压力陶瓷片。
在上述的的压力套筒中,在固定件的开口和径向外边缘之间的压力套筒的接触面上设置向内的倾斜部,斜角在0.5°至1.5°之间。
在上述的压力套筒中,产生振动的结构件是内燃发动机的发动机组。
本发明套筒的优点是这样得到的,优选由金属制成的螺纹环通过轴向凸出附加件构成用于迷宫式密封的空腔,在用塑料如聚氨酯或玻璃纤维加强的尼龙对压力套筒注塑包封时并用这些塑料填充迷宫,这时,塑料流入压力套筒周围的凹处,并且固化后形成与螺纹环接触部分的密封连接。
由于在使用压力套筒的许多情况下如作为内燃发动机的爆燃传感器存在的危险是,腐蚀的液体可能流入壳体,可能是通过螺纹环的螺纹,因此良好的密封是很重要的。此外在使用时还会出现大的温度波动,由于压力套筒和壳体不同的延伸系数其温度波动会导致壳体和一般金属压力套筒之间形成间隙。通过在螺纹环的附加件和具有环绕凹部的压力套筒体之间的塑料层作为迷宫式密封就可以其简单的方式避免上述问题。此外,该附加件同时作为塑料膨胀时的限位件。
参照附图描述本发明的压力套筒的实施例,其中,
图1示出了通过具有压力套筒和螺纹环的爆燃传感器壳体的纵向断面图;
图2示出了图1螺纹环的顶视图;
图3示出了图1螺纹环的断面图。
图1示出了用于内燃发动机的具有壳体1的爆燃传感器,在其壳体1中设置压力套筒2,它的下接触面3置于发动机的壳体(未示出)上,以检测其发动机的振动。起始于下接触面3,在压力套筒2的外周上设置以下元件:绝缘片4、接触片5、压电陶瓷片6(作为检测元件)接着是第二接触片5以及第二绝缘片4。在该结构上设置一振动质量件7,它通过盘簧8和拧入的螺纹环20在振动质量7和压电陶瓷片6的方向上形成预紧力。
一连接电缆11注塑到由人造材料如聚氨酯(PUR)或玻璃纤维强化的尼龙(PA66 GF 35)组成的特别是通过注塑工艺成形的壳体1的组合连接件10中。连接电缆11的导体通过两个接触片5连到压电陶瓷片6的两侧并传递压电陶瓷片6受压应力时产生的电压。一固定螺栓(未示出)穿过中心凹槽或孔12使爆燃传感器直接或间接地固定在内燃发动机的壳体上。
在装配爆燃传感器时,由固定螺栓施加的总转矩传给压力套筒2,即通过固定不会有力作用到压电陶瓷片6上。在此需要的预紧力是这样形成的,即通过旋转螺纹环20使件4至7的整体结构抵靠在压力套筒2的凸出区域13上,以便整个吸振器的实质部件定位在初始位置上。
预紧力是这样选定的,产生的轴向力刚刚对压电陶瓷片6产生作用而不会产生电信号的变坏,并且尽可能不受在装配压力套筒2时热膨胀和不可避免产生的压缩的影响。由与内燃发动机的振动成比例的振动件7施加的脉冲通过压电陶瓷片6转换成电压脉冲,流电压脉冲可在相应的测量装置上读出或进一步送到一个控制装置中。
此外在图2和3中示出了螺纹环20的细节。下面参照图1还要作进一步描述。螺纹环20具有一轴向凸出的附加件21,它通过其内表面与压力套筒2之圆周上的凹槽22相对安置。
由于在制造壳体1对压力套筒2注塑包封时在压力套筒2周围和附加件21之间的塑料形成了迷宫式密封23,从而保证了与螺纹环20结合的总结构的有利密封。此外由于温度变化而产生的伸缩差通过与凹槽22的迷宫式接缝不会形成干扰性的间隙,由此可以达到一定的温度。
Claims (8)
1.特别是用于吸振器的套筒,包括:
-直接或间接的固定件,它穿过压力套筒(2)的中心凹口(12),具有接触面(3)的压力套筒(2)紧固到产生振动的结构件上;
-检测装置(6),它通过轴向预紧力保持在压力套筒(2)的径向外部;
-在压力套筒上的作为限位件的螺纹环(20),用于通过弹簧(8)之压力定位的振动质量件(7),该质量件(7)通过检测装置(6)设置;
-通过注塑工艺在压力套筒(2)周围形成的塑料壳体(1);其特征在于,
-螺纹环(20)在离开振动质量件(7)的一侧具有轴向凸出附加件(21),它与至少一个在压力套筒(2)圆周上的里边对置凹槽(22)一起形成一迷宫式密封(23);
-通过注塑工艺,塑料质量可密封地填入迷宫式密封(23)中。
2.如权利要求1的压力套筒,其特征在于,壳体(1)的塑料是聚氨酯(PUR)。
3.如权利要求1的压力套筒,其特征在于,壳体(1)的塑料是玻璃纤维强化的尼龙(PA66 GF35)。
4.如权利要求1至3之一的压力套筒,其特征在于,压力套筒由钢制成。
5.如权利要求1至3之一的压力套筒,其特征在于,压力套筒(2)由黄铜制成。
6.如权利要求1至3之一的压力套筒,其特征在于,检测装置(6)是压力陶瓷片。
7.如权利要求1至3之一的压力套筒,其特征在于,在固定件的开口和径向外边缘之间的压力套筒(2)的接触面(3)上设置向内的倾斜部,斜角在0.5°至1.5°之间。
8.如权利要求1至3之一的压力套筒,其特征在于,产生振动的结构件是内燃发动机的发动机组。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19524148.7 | 1995-07-03 | ||
DE19524148A DE19524148C1 (de) | 1995-07-03 | 1995-07-03 | Schwingungsaufnehmer |
Publications (2)
Publication Number | Publication Date |
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CN1145988A CN1145988A (zh) | 1997-03-26 |
CN1073211C true CN1073211C (zh) | 2001-10-17 |
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Application Number | Title | Priority Date | Filing Date |
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CN96110953A Expired - Fee Related CN1073211C (zh) | 1995-07-03 | 1996-07-03 | 具有螺纹环的压力套筒 |
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KR (1) | KR100481237B1 (zh) |
CN (1) | CN1073211C (zh) |
DE (1) | DE19524148C1 (zh) |
HU (1) | HU219523B (zh) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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DE19829409C2 (de) * | 1998-07-01 | 2003-11-13 | Bosch Gmbh Robert | Schwingungsaufnehmer mit einer Druckhülse |
DE19829379C2 (de) * | 1998-07-01 | 2002-11-07 | Bosch Gmbh Robert | Schwingungsaufnehmer mit einer Druckhülse |
DE19829407A1 (de) * | 1998-07-01 | 2000-01-13 | Bosch Gmbh Robert | Schwingungsaufnehmer mit einer Druckhülse |
CN104511271B (zh) * | 2013-09-24 | 2017-12-15 | 中国石油化工股份有限公司 | 一种分子筛、其制造方法及其应用 |
CA3021606C (en) * | 2016-04-27 | 2024-01-09 | China Petroleum & Chemical Corporation | Molecular sieve, method for manufacture thereof, and application thereof |
US10053368B1 (en) * | 2017-09-07 | 2018-08-21 | Chevron U.S.A. Inc. | Synthesis of AFX framework type molecular sieves |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1046039A (zh) * | 1989-03-30 | 1990-10-10 | 内燃发动机与测量技术有限公司Avl公司 | 压力传感器 |
CN2185810Y (zh) * | 1993-09-20 | 1994-12-21 | 创新工业技术移转股份有限公司 | 内燃机引擎上用的信号产生器装置 |
CN2190783Y (zh) * | 1994-03-31 | 1995-03-01 | 山东大学 | 动态压力传感器 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3503558A1 (de) * | 1985-02-02 | 1986-08-07 | Bosch Gmbh Robert | Aus wenigstens zwei teilen bestehendes gehaeuse |
DE4403660B4 (de) * | 1993-04-10 | 2006-08-10 | Robert Bosch Gmbh | Druckhülse |
US5329809A (en) * | 1993-04-22 | 1994-07-19 | General Motors Corporation | Non-intrusive cylinder pressure sensor |
-
1995
- 1995-07-03 DE DE19524148A patent/DE19524148C1/de not_active Expired - Fee Related
-
1996
- 1996-07-02 HU HU9601817A patent/HU219523B/hu not_active IP Right Cessation
- 1996-07-02 KR KR1019960026669A patent/KR100481237B1/ko not_active IP Right Cessation
- 1996-07-03 CN CN96110953A patent/CN1073211C/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1046039A (zh) * | 1989-03-30 | 1990-10-10 | 内燃发动机与测量技术有限公司Avl公司 | 压力传感器 |
CN2185810Y (zh) * | 1993-09-20 | 1994-12-21 | 创新工业技术移转股份有限公司 | 内燃机引擎上用的信号产生器装置 |
CN2190783Y (zh) * | 1994-03-31 | 1995-03-01 | 山东大学 | 动态压力传感器 |
Also Published As
Publication number | Publication date |
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HU219523B (hu) | 2001-04-28 |
CN1145988A (zh) | 1997-03-26 |
HUP9601817A2 (hu) | 1999-02-01 |
KR970007310A (ko) | 1997-02-21 |
HU9601817D0 (en) | 1996-08-28 |
KR100481237B1 (ko) | 2005-06-08 |
DE19524148C1 (de) | 1996-08-29 |
HUP9601817A3 (en) | 2000-10-30 |
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