CN213422337U

CN213422337U - Oil mass detection device based on bridge type pressure sensor

Info

Publication number: CN213422337U
Application number: CN202022867113.5U
Authority: CN
Inventors: 许昊; 朱胜飞
Original assignee: Hefei Fengze Machinery Co ltd
Current assignee: Hefei Fengze Machinery Co ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-06-11
Anticipated expiration: 2030-12-03

Abstract

The application relates to an oil mass detection device based on a bridge type pressure sensor, which comprises a floating part arranged in a container, an expansion part connected between the floating part and the inner top wall of the container, and a bridge type pressure sensor part arranged on the expansion part and used for detecting floating pressure of the floating part; the telescopic piece comprises a sleeve which is vertically arranged and fixed on the inner top wall of the container, a telescopic rod which is slidably arranged in the sleeve and a detection spring which is sleeved on the telescopic rod; the lower end of the telescopic rod is fixedly connected with the top of the floating piece; one end of the detection spring is connected with the floating part, and the other end of the detection spring is connected with the detection end of the bridge type pressure sensor component. This application has the effect that is favorable to promoting the detection precision to the oil mass in the container.

Description

Oil mass detection device based on bridge type pressure sensor

Technical Field

The application relates to the field of oil detection, especially, relate to an oil mass detection device based on bridge type pressure sensor.

Background

Currently, in oil production, stock detection of oil, especially raw materials of lubricating oil, is an important component, and oil is usually stored in a closed container, for example, a photoelectric liquid level meter is used for detecting the oil level to calculate the oil amount, so that the oil is easily limited by the container to generate large errors. Therefore, it becomes a more appropriate choice to use the pressure sensor to detect the amount of oil.

Among the pressure sensors, the bridge type pressure sensor has good detection accuracy due to special circuit design. Chinese utility model patent with publication number CN206300711U discloses an electronic scale circuit is measured in four corners of four series connections of half-bridge sensors, include the electric bridge that has power contact and six signal measurement points that is formed by four resistance-type pressure sensor S1, pressure sensor S4, pressure sensor S3 and pressure sensor S2 establish ties in proper order, not only measure the electric bridge that four pressure sensors constitute, still measure the output relation between four pressure sensors respectively, obtain four pressure sensors' S output separately, mark through the four corners, reduced pressure sensor and selected the requirement of pairing, improved measuring precision.

However, in the conventional oil quantity detection technology based on the bridge type pressure sensor, the weighing container and the whole oil mass in the container are generally adopted to calculate the oil quantity, and the oil quantity is easily interfered by external factors, particularly air flow and the like, so that the detection precision is reduced.

With respect to the related art in the above, the inventors thought that there was a defect that the detection accuracy was insufficient.

SUMMERY OF THE UTILITY MODEL

In order to promote the detection precision to the oil mass in the container, this application provides an oil mass detection device based on bridge type pressure sensor.

The application provides a pair of oil mass detection device based on bridge type pressure sensor adopts following technical scheme:

an oil mass detection device based on an electric bridge type pressure sensor comprises a floating part arranged in a container, an expansion part connected between the floating part and the inner top wall of the container, and an electric bridge type pressure sensor part arranged on the expansion part and used for detecting the floating pressure of the floating part; the telescopic piece comprises a sleeve which is vertically arranged and fixed on the inner top wall of the container, a telescopic rod which is slidably arranged in the sleeve and a detection spring which is sleeved on the telescopic rod; the lower end of the telescopic rod is fixedly connected with the top of the floating piece; one end of the detection spring is connected with the floating part, and the other end of the detection spring is connected with the detection end of the bridge type pressure sensor component.

Through adopting above-mentioned technical scheme, when the oil mass in the container changes, the liquid level of oil is floated from top to bottom, at this moment, the part that floats along with the liquid level of oil floats, make the telescopic link slide for the sleeve, and the floating of the part that floats has changed the interval of floating part and bridge type pressure sensor part, thereby the elastic force who detects the spring has been changed, make bridge type pressure sensor part detect different pressure values, can correspond different oil masses, because this testing process takes place in the container, be difficult for receiving external factor like the influence of air current, so be favorable to promoting the detection precision to the oil mass in the container.

Preferably, a slip ring is sleeved outside the sleeve and connected with the detection spring, and the slip ring is abutted to the detection end of the bridge type pressure sensor component.

Through adopting above-mentioned technical scheme, the slip ring cover is located on the sleeve for the slip ring can slide along sleeve length direction, thereby makes the detection spring vertical to the effort direction of bridge type pressure sensor part, makes the detected value of bridge type pressure sensor part more accurate.

Preferably, a limiting ring positioned on the lower side of the slip ring is fixed at the lower end of the sleeve.

Through adopting above-mentioned technical scheme, the setting of spacing ring is favorable to preventing that the interior liquid level of container from crossing excessively and causing the condition that the sliding ring drops from the sleeve.

Preferably, the floating part is provided with a mounting ring piece, the mounting ring piece is fixedly connected with the lower end of the detection spring, and the mounting ring piece is provided with a connecting screw in threaded connection with the floating part in a penetrating manner.

Through adopting above-mentioned technical scheme, the setting of installation ring piece has realized being connected with dismantling of floating member to the detection spring, conveniently changes floating member.

Preferably, the sleeve side wall is provided with an air vent arranged at the top of the sleeve, the inner side wall of the sleeve is provided with an air guide groove extending along the sliding direction of the telescopic rod, and the upper end of the air guide groove is communicated with the air vent.

Through adopting above-mentioned technical scheme, the setting of air vent and air guide groove has balanced the atmospheric pressure in the sleeve, is favorable to preventing the telescopic link because the inside and outside atmospheric pressure difference of sleeve and the condition that is difficult to slide.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the oil quantity in the container changes, the liquid level of the oil floats up and down, at the moment, the floating piece floats along with the floating of the liquid level of the oil, the floating of the floating piece changes the elastic acting force of the detection spring, so that the bridge type pressure sensor component can correspond to different oil quantities when detecting different pressure values, and the detection process is carried out in the container and is not easily influenced by external factors such as air flow, so that the detection precision of the oil quantity in the container is favorably improved;

2. the slip ring is sleeved on the sleeve, so that the acting force direction of the detection spring on the bridge type pressure sensor component is vertical, and the detection value of the bridge type pressure sensor component is more accurate;

3. due to the arrangement of the mounting ring piece, the detachable connection between the detection spring and the floating piece is realized, and the floating piece is convenient to replace.

Drawings

Fig. 1 is a schematic structural diagram of an oil amount detection device based on a bridge type pressure sensor according to an embodiment of the present application.

Description of reference numerals: 1. a float member; 11. installing a ring sheet; 12. a connecting screw; 2. a telescoping member; 21. a sleeve; 211. a vent hole; 212. a gas guide groove; 213. a slip ring; 214. a limiting ring; 22. a telescopic rod; 23. detecting a spring; 3. bridge type pressure sensor components.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses oil mass detection device based on bridge type pressure sensor. Referring to fig. 1, the oil quantity detection device based on the bridge type pressure sensor comprises a floating member 1 arranged in a container, an expansion member 2 connected between the floating member 1 and the inner top wall of the container, and a bridge type pressure sensor component 3 arranged on the expansion member 2 and used for detecting the floating pressure on the floating member 1. The floating piece 1 is made of oil-resistant plastic and can be selected from PA material, and the floating piece 1 is hollow box-shaped. The extensible member 2 includes sleeve 21, telescopic link 22 and detection spring 23, and sleeve 21 is the circular shape bushing structure for the opening, and sleeve 21 is vertical to be set up in the 1 upside of floating member, and sleeve 21's opening sets up down, and the roof is fixed in sleeve 21 upper end and the container. The telescopic rod 22 is vertically arranged and has a circular horizontal cross section. The lower end of the telescopic rod 22 is fixed with the upper surface of the floating part 1, and the upper end of the telescopic rod 22 penetrates into the sleeve 21 and is matched with the inner wall of the sleeve 21 in a sliding manner. The outer side wall of the sleeve 21 is provided with a vent hole 211, the opening of the vent hole 211 is circular, and the vent hole 211 is arranged at the upper end of the sleeve 21. The gas guide groove 212 is formed in the inner side wall of the sleeve 21, the gas guide groove 212 is long in strip shape and extends in the vertical direction, the upper end of the gas guide groove 212 is communicated with the vent hole 211, and the lower end of the gas guide groove 212 is communicated with the opening end face of the sleeve 21. The arrangement of the vent hole 211 and the air guide groove 212 balances the air pressure in the sleeve 21, which is beneficial to preventing the expansion link 22 from being difficult to slide due to the air pressure difference between the inside and the outside of the sleeve 21.

Referring to fig. 1, the lower end of the sleeve 21 is provided with a slip ring 213 and a limit ring 214, the slip ring 213 and the limit ring 214 are both circular, the limit ring 214 is arranged at the lower side of the slip ring 213, the limit ring 214 is fixed with the outer side wall of the sleeve 21, and the bottom surface of the limit ring 214 is flush with the lower end of the sleeve 21. The inner side wall of the slip ring 213 is slidably engaged with the outer side wall of the sleeve 21. The floating member 1 is provided with a mounting ring piece 11, the mounting ring piece 11 is a circular ring-shaped sheet and is sleeved on the telescopic rod 22, and the bottom surface of the mounting ring piece 11 is attached to the upper surface of the floating member 1. The mounting ring piece 11 is provided with a connecting screw 12 in a penetrating manner, the end part of the connecting screw 12 penetrates into the upper surface of the floating part 1 and is in threaded connection with the floating part 1, so that the mounting ring piece 11 and the floating part 1 can be detachably mounted, and when the connecting screw 12 is screwed, the mounting ring piece 11 is fixed with the floating part 1. The detection spring 23 is sleeved on the telescopic rod 22, the axis of the detection spring 23 coincides with the axis of the telescopic rod 22, the upper end of the detection spring 23 is fixed with the bottom surface of the sliding ring 213, and the lower end of the detection spring 23 is fixed with the upper surface of the installation ring plate 11. The bridge type pressure sensor component 3 is a conventional bridge type pressure sensor, and is disposed on one side of the sleeve 21 and fixed to the outer side wall of the sleeve 21, and the detection end of the bridge type pressure sensor component 3 is directed downward and abuts against the upper surface of the slip ring 213.

The implementation principle of the oil quantity detection device based on the bridge type pressure sensor is as follows: the device is marked as that when the floating piece 1 touches the bottom of the container, the detection spring 23 is still in a compressed state, and when the oil amount in the container changes, the liquid level of the oil floats up and down, at the moment, the floating piece 1 floats along with the floating of the liquid level of the oil, so that the telescopic rod 22 slides relative to the sleeve 21, and the floating of the floating piece 1 changes the distance between the floating piece 1 and the bridge type pressure sensor component 3, thereby changing the elastic acting force of the detection spring 23, so that the bridge type pressure sensor component 3 can detect different pressure values and correspond to different oil amounts.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an oil mass detection device based on bridge type pressure sensor which characterized in that: the floating pressure sensor comprises a floating part (1) arranged in a container, an expansion part (2) connected between the floating part (1) and the inner top wall of the container, and an electric bridge type pressure sensor component (3) arranged on the expansion part (2) and used for detecting the floating pressure on the floating part (1); the telescopic piece (2) comprises a sleeve (21) which is vertically arranged and fixed on the inner top wall of the container, a telescopic rod (22) which is slidably arranged in the sleeve (21) and a detection spring (23) which is sleeved on the telescopic rod (22); the lower end of the telescopic rod (22) is fixedly connected with the top of the floating piece (1); one end of the detection spring (23) is connected with the floating part (1), and the other end of the detection spring is connected with the detection end of the bridge type pressure sensor component (3).

2. The oil quantity detection device based on the bridge type pressure sensor according to claim 1, characterized in that: the sleeve (21) is sleeved with a slip ring (213), the slip ring (213) is connected with the detection spring (23), and the slip ring (213) is abutted to the detection end of the bridge type pressure sensor component (3).

3. The oil quantity detection device based on the bridge type pressure sensor according to claim 2, characterized in that: and a limiting ring (214) positioned on the lower side of the slip ring (213) is fixed at the lower end of the sleeve (21).

4. The oil quantity detection device based on the bridge type pressure sensor according to claim 1, characterized in that: the floating part (1) is provided with a mounting ring piece (11), the mounting ring piece (11) is fixedly connected with the lower end of the detection spring (23), and the mounting ring piece (11) is provided with a connecting screw (12) in a penetrating manner, wherein the connecting screw is in threaded connection with the floating part (1).

5. The oil quantity detection device based on the bridge type pressure sensor according to claim 1, characterized in that: set up in air vent (211) at sleeve (21) top, air guide groove (212) along telescopic link (22) slip direction extension are seted up to sleeve (21) lateral wall, air guide groove (212) upper end with air vent (211) intercommunication.