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Device for detecting fluid pressure in hose

A technology of internal fluid and hose, applied in the direction of measuring fluid pressure, measuring device, measuring fluid pressure through electromagnetic components, etc., can solve the problems of inaccurate pressure detection accuracy, elastic hose affecting the detection results, etc., to achieve the effect of eliminating the impact

Active Publication Date: 2016-12-28
SHENZHEN MINDRAY SCIENTIFIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the existing pressure detection method is used for detection, the stress generated by the extrusion deformation of the elastic hose will affect the detection results, resulting in inaccurate pressure detection accuracy

Method used

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  • Device for detecting fluid pressure in hose
  • Device for detecting fluid pressure in hose
  • Device for detecting fluid pressure in hose

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Please refer to figure 2 and 3 , in this embodiment, the device for detecting the fluid pressure in the hose includes a lower support frame 1 , a pressure sensor 2 , an upper support frame 3 , a force guiding support 4 and a pressure plate 5 .

[0034] The pressing plate 5 has a first pressing surface 51 , and one end of the upper support frame 3 has a second pressing surface 31 . On the second extruding surface 31, there is a guide hole 32 extending from the other end of the upper support frame 3 to the second extruding surface 31, and the first extruding surface 51 is opposite to the second extruding surface 31. A compression gap for compressing the hose is formed between them.

[0035] The amount of compression of the hose 7 to be tested in the direction perpendicular to the first extrusion surface 51 and the second extrusion surface 31 is determined by the pressure between the first extrusion surface 51 of the pressing plate 5 and the second extrusion surface 31 ...

Embodiment 2

[0049] The second embodiment provides another device structure for detecting fluid pressure in the hose. The difference between it and the first embodiment is that the force guiding bracket 4 is canceled in the second embodiment, and the pressure sensor 2 is directly connected to the Hose butt detection.

[0050] Specifically, the device for detecting fluid pressure in the hose includes a pressure plate, an upper support frame, a pressure sensor and a lower support frame.

[0051] The pressing plate has a first extrusion surface, one end of the upper support frame has a second extrusion surface and a guide hole extending from the other end of the upper support frame to the second extrusion surface. The first extrusion surface and the second extrusion surface are oppositely arranged, and a compression gap for compressing the hose is formed between the two, and the distance between the first extrusion surface and the second extrusion surface is smaller than the hose to be tested...

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PUM

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Abstract

This application discloses a device for detecting fluid pressure in a hose. The first pressing surface on the pressure plate and the second pressing surface on the upper support frame are oppositely arranged to form a pressing gap, and the hose is placed In the compression gap, the hose can be squeezed and deformed, thereby forming two plane areas respectively matched with the first extrusion surface and the second extrusion surface, and the force-measuring plane of the force-guiding bracket extends from the guide hole. into the compression gap, abut against the plane area formed by the hose to be tested on the second extrusion surface, and the third extrusion surface on the other end of the force guide bracket abuts against the pressure fixed on the lower support frame On the sensor, so that the fluid pressure in the hose is transmitted to the pressure sensor. Or directly protrude the force-bearing portion on the pressure sensor for bearing the external force from the guide hole into the compression gap, so that the force-bearing portion abuts against the plane area where the hose to be tested fits on the second extrusion surface, Eliminate the influence of the stress caused by the extrusion and deformation of the hose itself on the test results.

Description

technical field [0001] The present application relates to a detection device, in particular to a device for detecting fluid pressure in a hose. Background technique [0002] In clinical medical applications, elastic hoses are often used to transfer liquids, such as delivering medicinal liquids, nutritional liquids, or blood to the human body, or extracting liquids from the human body, or transferring liquids from different devices. In the above applications, it is necessary to detect the fluid pressure in the elastic hose to limit the pressure in the tube to the range set by the equipment. If it exceeds the set range, an alarm message can be provided. [0003] The hose is generally made of PVC (polyvinyl chloride) or silicone material, and the deformation stress of the material on both sides of the hose is relatively large when it is squeezed and deformed, such as figure 1 In the part shown in A, the stress is affected by factors such as hose material, ambient temperature a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L9/00
Inventor 刘华勇魏流东
Owner SHENZHEN MINDRAY SCIENTIFIC CO LTD