CN1246612A - Liquid pressure measurer - Google Patents

Liquid pressure measurer Download PDF

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Publication number
CN1246612A
CN1246612A CN 98126491 CN98126491A CN1246612A CN 1246612 A CN1246612 A CN 1246612A CN 98126491 CN98126491 CN 98126491 CN 98126491 A CN98126491 A CN 98126491A CN 1246612 A CN1246612 A CN 1246612A
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China
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actuator
piston
fluid pressure
pressure
central axis
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CN 98126491
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Chinese (zh)
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陈春祥
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陈春祥
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Priority to CN 98126491 priority Critical patent/CN1246612A/en
Publication of CN1246612A publication Critical patent/CN1246612A/en

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Abstract

A fluid pressure measurer structurally features that in its casing there is a driver which is connected to pressure-sensitive elemet at one end and to commutating mechanism at another end. The pressure of medium directly acts on the pressure-sensitive element to force it to be deformed. By mechanical drive, the indicating needle is moved to correctly measure the fluid pressure. Its advantages arehigh accuracy, simple structure and low cost.

Description

流体压力测量仪 Fluid pressure gauge

本发明涉及一种流体压力测量仪,尤其是适合于由壳体、刻度盘、指示针和密封接头组成的流体压力测量装置。 The present invention relates to a fluid pressure measuring device, especially suitable for use by the housing, the dial, and indicating the needle sealing joint composed of a fluid pressure measurement device. 现在市场上出现的流体压力测量装置是在圆形的壳体内,有一根断面呈椭圆型的弹簧弯管,其一端与流体输出管相通,成为固定端;另一端是封闭的自由端,与一边杆连接。 Fluid pressure measurement device now appearing on the market in a circular housing, has an oval shaped cross section bending spring having one end in communication with the fluid outlet tube, a fixed end; the other end is a free end closed, while the rod. 连杆的另一端是扇形齿轮,扇形齿轮与中心轴上的小齿轮相衔接。 The other end of the link is a sector gear, the sector gear and the pinion gear on the central axis of convergence. 压力表的指针固定在中心轴上。 Gauge pointer fixed to the center shaft. 当弹簧内受到流体的压力时,椭圆断面就有膨胀成圆的趋势,从而由固定端开始逐渐向外伸直,也就是使自由端向外移动,再经过连杆带动扇形齿轮与小齿轮转动,使指针向顺时针方向转动一个角度。 When subjected to pressure of the fluid within the spring, it has an elliptical cross-section into a circular expansion tendency, thereby gradually starting from the fixed end straighten out, i.e. the free end to move outwardly, through rod driven sector gear to rotate with the pinion gear , the pointer is rotated at an angle in the clockwise direction. 流体的压力越大、指针转动角度也越大。 The greater the pressure of the fluid, the greater the angle of rotation of the pointer. 这时指针在压力表盘上指示的刻度值,就是流体的压力值。 In this case the scale value indicated by the pointer on the gauge plate, the fluid is the pressure value. 由于流体对弹簧弯管内的压力各段不均匀,测量出的压力值也就不很精确,如它受到大的压力冲击时,或超出弹簧弯管的弹性限度,则弹簧弯管容易损坏。 The fluid pressure within the spring bend of each segment is uneven, the measured pressure value is also not very accurate, as it is subject to large pressure surge, or beyond the elastic limit of the spring bend, the spring bend easily damaged. 另外弹簧弯管受到自身弹性限度影响,弹性变形较小,测量流体压力值跨度不大;并且结构复杂,加工难度大,成本都很高。 Also affected by the spring bending elastic limit itself, an elastic deformation is small, measuring the fluid pressure is not too great; and complex structure, difficult process, costs are high.

本发明的任务是提供一种流体压力测量仪,它通过相互衔接的部件直线式传送源动力,经过换向机构使其变成旋转力,带动指示针转动,从而可克服上述缺点,保证测量的准确性。 Object of the invention is to provide a fluid pressure measuring device, through which the linear member driving force transmitting engagement with each other, through the commutation mechanism into rotational force so as to drive the rotation of the indicating needle, which can overcome the above disadvantages, to ensure that the measured accuracy.

为完成上述任务,本发明采用的解决方案是:在壳体内装有一个传动器,该传动器的动作由设在端头的压敏元件和回位弹簧控制,传动器的输出端与换向机构相接;该换向机构能将传动器的直线运动转换成指示针旋转的动作。 To accomplish the above tasks, the present invention employs the solutions are: a gear housing in the interior of the actuator by the operation of the pressure-sensitive element provided on the tip of the return spring and controls the output of the actuator commutation contact means; the transducer means capable of converting linear motion to the actuator to rotate the needle operation instruction. 所述的压敏元件包括固定轴套和两端由紧固件固定在该固定轴套中部的中空杆件,中空杆件前端是封闭的弹性体,该弹性体动作可带动滑动套在其外部的活塞动作。 The pressure sensitive element comprises a fixed sleeve fixed at both ends and the middle of the fixed hollow rod sleeve by a fastener, the front end of the hollow member is closed elastic body, the elastic body motion can drive the slidable sleeve at its outer piston action. 当压敏元件受到流体的压力后,会根据压力的大小产生一定的轴向形变,可推动滑动套沿其轴向移动,从而使其作用力直接传递给传动器,使传动器输出端动作,带动换向机构动作,在刻度盘上即可显示压力值。 When fluid under pressure sensitive element, will have a certain axial deformation according to the magnitude of the pressure, the sliding sleeve can be pushed to move axially, so that it is directly transmitted to the actuator force, so that the output of the transmission operation, reversing drive mechanism is operated to display the pressure value on the dial.

该传动器包括一个本体,在本体内设有中空孔,中空孔内装配有活塞,活塞轴向延伸部分是一个锯形齿条,并且与换向机构中心轴上的齿轮相啮合。 The actuator comprises a body provided with a hollow bore within the body, the hollow hole is equipped with a piston axially extending portion is a saw-racks, and the engagement to the gear change mechanism relative to the central axis. 所述的回位弹簧套在活塞轴上,此弹簧的一端与活塞上的轴盘相接,另一端与调整阀相接。 The return spring of the piston shaft sleeve, one end of this spring is engaged on the piston shaft the disc, and the other end in contact with the regulating valve. 传动器的传动主要靠活塞动作来实现。 Actuator drive mainly by piston movement to realize. 活塞在受到压敏元件的作用力时,便产生轴向直线运动,活塞前端的锯形齿条推动换向机构的中心轴传动。 When the piston by the biasing force of the pressure-sensitive element, will produce an axial linear movement of the piston pushing the tip of the saw-shaped rack gear switching center axis of the mechanism.

换向机构包括一个与传动器中的活塞运动方向相垂直的中心轴,在中心轴中部设有一个齿轮,指示针固定在中心轴的项端。 Transducer including a central axis perpendicular to the direction of movement of the piston in the actuator mechanism, in the middle of the central shaft is provided with a gear, the center axis of the fixed end of the entry indicating needle. 转向机构主要功能是将传动器中活塞直线运动转变为与其方向相垂直的旋转运动,带动指示针顺时针方向转动一个角度,在表盘上标定出测定的压力值。 The main function of the steering actuator means is a piston motion into linear motion perpendicular to its rotational direction, the needle driven in the clockwise direction indicated by an angle, a nominal pressure value measured on the dial.

在传动器上还设有一个平衡阀和一个调整阀,使该传动器保持在传动过程中作直线运动。 In the actuator a balancing valve and is provided with a further adjusting valve so that the actuator remains in the linear movement of the transmission process. 平衡阀即是调零装置,用来调整回位弹簧初始压力。 That is, zero balance valve means for regulating the initial pressure of the return spring.

所述换向机构中心轴下部安装有一个回位盘簧,该盘簧可保证活塞前端的齿条和中心轴上的齿轮紧密啮合,以提高测量的准确度。 Means mounted to a lower portion of the transducer has a center axis of the return spiral spring, the spiral spring can ensure a tight engagement of the rack and pinion and the center axis of the front end of the piston, in order to improve the accuracy of the measurement.

由于上述解决方案中采用了将介质的压力直接作用于压敏元件上的结构,迫使压敏元件产生轴向形变,再通过机械直线传动换成指示针的旋转运动,避免了由于弹性变形所造成的误差,因此可准确地直接地测量出流体的压力,几乎没有误差,并且结构简单,成本低。 Since the above-described solutions of the pressure medium acts directly on the pressure-sensitive element structure, an axial force sensitive element generates deformation, and then replaced by the rotational movement of the indicator pin linear mechanical transmission, avoiding the elastic deformation caused by error, it can be directly and accurately measure the pressure of the fluid, almost no errors, and the simple structure and low cost.

下面结合附图和实施例作进一步详细说明。 The drawings and embodiments described in further detail below in conjunction.

附图1是本发明的剖面结构示意图附图2是本发明回位盘簧的俯视示意图图1中给出了本发明一个实施例的具体结构它包括壳体1、传动器7和换向机构。 1 is a schematic cross-sectional structure of the present invention, Figure 2 is given a specific configuration of an embodiment of the present invention, the disc 1 of the present invention, the return spring comprising a top schematic view of a housing 1, and a reversing gear mechanism 7 . 在圆形的壳体1上部装有透明玻璃12,且由压盖11固定,通过透明玻璃12可清晰看到刻度盘2上的该度和指示针3所在的位置。 In the upper portion of the housing 1 is provided with a circular transparent glass 12, and is fixed by a lid 11, 12 may clearly see the position of the indicating needle and the dial 23 is located through the transparent glass. 在初始状态下,指示针3尖端指向刻度盘上的“O”点。 In the initial state, indicating that the needle tip 3 point "O" point on the dial. 在壳体1内刻度盘2的下部设有传动器,该传动器包括一个本体701,它的外形是制成一体的圆柱形体。 In a dial housing lower part 2 is provided with an actuator, the actuator comprises a body 701, its shape is integrally formed cylindrical body. 在本体701的中部设有孔705和706,而在孔705和孔706之间固定有中空杆件707。 In the central body 701 is provided with holes 705 and 706, and is fixed to the hollow member 707 between the bore 705 and the bore 706. 中空杆件707的两端还设有紧固件709将其固定。 Both ends of the hollow member 707 is further provided with fastener 709 secured. 孔706设有前端封闭的滑动套710,该滑动套710内壁还充有中空的弹性体6。 Hole 706 has a closed front end 710 of the sliding sleeve, the sliding sleeve 710 is also filled with an inner wall of the hollow elastic body 6. 所述的弹性体6的一端由坚固件709固定住,且与滑动套710的内径相匹配或气密性配合。 One end of the elastic member 6 is fixed by the fasteners 709, and match the inner diameter of the sliding sleeve 710 or airtight fit. 滑动套710前端与活塞702相接,活塞702接近中部设有一个轴盘704,活塞702上套有回位弹簧703,该弹簧一端与轴盘704相接,另一端与调整阀8相接。 710 702 front end of the sliding sleeve in contact with the piston, a piston 702 is provided near the central axis of the disc 704, the sleeve 702 of the piston return spring 703, one end of the shaft of the spring contact plate 704, and the other end in contact with the regulating valve 8. 所述的调整阀8类似螺帽,中部设有圆孔且可套入活塞702的前端,然后旋拧在传动器7本体701的一端上。 8 is similar to the regulating valve nut, provided with central circular hole and the front end of the piston 702 may be set into, and then screwed on the end 701 of the actuator body 7. 调整阀8的作用是调整回位弹簧703的初始压力,使指示针3的初始状态指向刻度盘2的零位上。 Action adjusting valve 8 is to adjust the initial pressure of the return spring 703 so as to indicate the initial state of the needle point 3 on the dial 2 is zero.

活塞702轴向延伸出中空孔部分是锯形齿条708,它与换向机构的中心轴9上的齿轮10相啮合。 The piston 702 axially extending portion is hollow hole saw shape rack 708, which engages with the gear 9 on the central axis of the transducer means 10. 所述的换向机构即是将活塞702的直线运动转变成指示针3旋转运动的机构,它通过中心轴9和固定在其上齿轮10来实现。 I.e., the reversing mechanism is a linear movement of the piston 702 into rotary motion indicative of the needle means 3, 9, and it is fixed to the gear 10 through which the center axis is achieved. 中心轴9的两端分别设置在壳体1和刻度盘2的圆心处,并且可在其上转动。 Both ends of the central shaft 9 are respectively provided at the center of the housing 1 and dial 2, and rotatably thereon. 它的中部设置的齿轮10与活塞702端部的齿条708紧密啮合,为了保证这一点在齿轮10下部还增设一个回位盘簧13,如附图2所示,回位盘簧13一端固定在中心轴9底部,另一端固定在压盖14上,该压盖可保证盘簧13在受震动时不移位。 It is arranged in the middle gear 10 and the rack portion 702 of the piston end 708 engages closely, in order to ensure that the lower gear 10 in a further additional return coil spring 13, as shown in Figure 2, the return coil spring 13 is fixed at one end at the bottom of the center shaft 9, and the other end is fixed to the lid 14, the lid 13 can ensure that the coil spring is not displaced when subject to vibration. 回位盘簧13有两个功能,其一是给齿轮10一个转动力,此转动力的方向与齿条708推动齿轮10转动时的方向相反,使齿条708与齿轮10始终保持紧密啮合,用以提高测量的精确度;其二是推动齿条回位。 Return coil spring 13 has two functions, one is a rotational force to the gear 10, the rotation direction of the force direction when rotation of the gear 10 push the rack 708 opposite to the rack 708 and the gear 10 remain tight engagement, to improve the accuracy of measurement; the second is to promote the return rack.

工作时,带有一定压力的流体通过密封接头5内的通道进入中空杆件707的中部后,射入弹性体6内,使弹性体6产生弹性变形,使它推动滑动套710轴向移动,从而推动传动器7中的活塞702沿轴向移动。 After the operation, fluid enters the middle with a certain pressure of the hollow member 707 through the passage in the sealing joint 5, the elastic member 6 enters the elastic member 6 is elastically deformed, pushing the slide sleeve 710 so that it moves axially, 7, thus promoting the actuator piston 702 to move axially. 活塞702前端的齿条708带动中心轴9上的齿轮10转动,从而带动指示针3向顺时针方向转动一个角度,指示刻度盘2上的数值即是此工作介质的压力值。 The gear 9 on the front end of the piston 702 of the rack 708 driven by the central shaft 10 is rotated, so as to drive the needle 3 indicates a rotation angle in the clockwise direction, the value indicated on the dial 2, i.e., the pressure of the working medium of this value. 介质的压力越大,指示针3转动角度越大。 The larger the pressure medium, the larger the rotational angle indicating needle 3. 当压力降低时,由于回位弹簧703和回位盘簧13力图使活塞802或指示针3恢复原状,使指示针3返回到相应的位置。 When the pressure is reduced, since the return spring 703 and the coil spring 13 tries to return the piston 802 or restitution indicator pin 3, so that the indicator needle 3 is returned to the appropriate position. 当压力彻底消失后,回位弹簧703将活塞702推回到起始位置,指示针3也就回到零点。 When the pressure is gone, the return spring 703 pushes the piston 702 back to the starting position, the needle 3 also indicates reset to zero. 为使测量出的压力值精度更高,在活塞702一端的上方设有一个平衡阀4,以防止活塞702在传动过程中倾斜。 To make the measured pressure value higher precision, above the piston 702 at one end is provided with a balancing valve 4, in order to prevent the piston 702 is inclined in the transmission process.

Claims (6)

1.一种由壳体、刻度盘、指示针和密封接头组成的流体压力测量仪,其特征在于:在壳体内安装有一个传动器,该传动器中的动作由设在端头的压敏元件和回位弹簧控制,传动器的输出端与换向机构相接;该换向机构能将传动器的直线运动转换成使指示针旋转的动作。 A by the housing, the dial, and indicating the needle sealing joint composed of fluid pressure measurement device, comprising: an actuator mounted within the housing, the actuator is provided by the operation of the pressure-sensitive tip and a control element return spring, the output of the actuator in contact with the transducer means; the transducer means capable of converting the linear motion of the actuator such that rotation of the operation indicating needle.
2.根据权利要求1中所述的流体压力测量仪,其特征于:所述的传动器上部设有一个平衡阀和一个调整阀,使该传动器在传动过程中保持直线运动。 The fluid pressure measuring device as claimed in claim in claim 1, characterized in that: said upper portion is provided with a balancing valve actuator and an adjustment valve so that the actuator remains in the linear motion transmission process.
3.根据权利要求1中所述的流体压力测量仪,其特征在于:所述的压敏元件包括一个固定轴套和两端由紧固件固定在该固定轴套中部的中空杆件,中空杆件前端是封闭的弹性体,该弹性体动作可带动滑动套在其外部的活塞动作。 3. The fluid pressure measuring device as claimed in claim in claim 1, wherein: said pressure sensitive element comprises a hollow rod and a bushing fixed ends fixed to the central sleeve by a fastener fixing the hollow the front end of the lever is a closed elastic body, the elastic body motion can drive the sliding sleeve on its exterior a piston action.
4.根据权利要求1所述的流体压力测量仪,其特征在于:所述传动器包括一本体,在本体内设有中空孔,中空孔内装配有活塞,活塞轴向延伸部分是一个锯形齿条,并且与换向机构中心轴上的齿轮相啮合;所述的回位弹簧套在活塞轴上,此弹簧的一端与活塞上的轴盘相接,另一端与调整阀相接。 4. The fluid pressure measuring device according to claim 1, wherein: said actuator comprises a body provided with a hollow bore within the body, the hollow hole is equipped with a piston axially extending portion is a saw shape rack, and the engagement to the gear change mechanism relative to the central axis; said return spring in the piston shaft sleeve, one end of this spring is engaged on the piston shaft the disc, and the other end in contact with the regulating valve.
5.根据权利要求1中所述的流体压力测量仪,其特征在于:所述的换向机构包括一个与传动器中的活塞运动方向相垂直的中心轴,在中心轴中部设有一个齿轮,指示针固定中中心轴的顶端。 5. The fluid pressure measuring device as claimed in claim in claim 1, wherein: said diverting means comprises a central axis perpendicular to the direction of movement of the piston in the actuator, a gear provided in the middle of the central axis, the central axis to the top of indicator pin fixing.
6.根据权利要求1中所述的流体压力测量仪,其特征在于:所述换向机构中心轴下部安装有一个回位盘簧和压盖,该盘簧可保证活塞前端的齿条和中心轴上的齿轮紧密啮合,该压盖可保证盘簧工作中不致损坏,以提高测量的准确度。 6. The fluid pressure measuring device as claimed in claim in claim 1, wherein: said transducer means mounted to the lower portion has a central axis and a return coil spring gland, ensures that the spiral spring front end of the rack and the center of the piston close gear shaft, the coil spring gland ensures work without damage, to improve the accuracy of the measurement.
CN 98126491 1998-12-29 1998-12-29 Liquid pressure measurer CN1246612A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102498377A (en) * 2009-08-13 2012-06-13 奇姆德恩医疗有限公司 Pressure indicator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102498377A (en) * 2009-08-13 2012-06-13 奇姆德恩医疗有限公司 Pressure indicator
CN102498377B (en) 2009-08-13 2014-05-14 奇姆德恩医疗有限公司 Pressure indicator

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