Micro differential pressure induction measuring device

Abstract

The utility model discloses a micro differential pressure induction measuring device, which relates to the technical field of liquid measuring instruments and comprises a bottom cover, fixing lugs are connected to the outer walls of the two sides of the bottom cover, a water inlet pipe and a water outlet pipe are connected to the two fixing lugs and the side walls of the bottom cover respectively, an upper cover is arranged at the upper end of the bottom cover, and an elastic supporting mechanism is arranged at the bottom of the inner wall of the upper cover. The top end of the inner wall of the upper cover is connected with a pressure detection assembly, the water inlet pipe is L-shaped, the vertical section of the water inlet pipe is located in the bottom cover, the elastic supporting mechanism comprises two mounting grooves symmetrically formed in the inner side wall of the upper cover, connecting rods are fixed in the two mounting grooves, and the two connecting rods are slidably sleeved with a movable plate; the parts, located above the movable plate, of the two connecting rods are sleeved with springs. According to the utility model, the pressure of water flowing through the bottom cover can be effectively detected through the cooperative use of the arranged elastic supporting mechanism and the pressure detection assembly, the whole measuring device is less in abrasion, and the service life of the whole measuring device is effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid measuring instruments, in particular to a micro differential pressure induction measuring device. Background Art

[0002] A differential pressure sensor is a sensor used to measure the difference between two pressures, and is usually used to measure the differential pressure at the front and rear ends of a device or component. In recent years, differential pressure sensors have been widely used in many high-precision measurement occasions such as micro flow measurement, leakage test, clean room monitoring, environmental airtightness detection, gas flow measurement, liquid level measurement, etc.

[0003] Existing optical fiber pressure sensors for measuring fluids all use elastic diaphragms as pressure sensing devices. Elastic diaphragms are easily affected by external interference, and their performance stability is insufficient. When the elastic diaphragm deforms, it undergoes an arc-shaped deformation, and the measurement of the deformation pressure is inaccurate and prone to errors. Moreover, elastic diaphragms are easily damaged, and their service life is difficult to guarantee. Therefore, a micro differential pressure induction measuring device is provided. Summary of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a micro differential pressure induction measuring device. By the combined use of an elastic support mechanism and a pressure detection component, the pressure of water flowing through the bottom cover can be effectively detected, and the wear of the entire measuring device is small, effectively ensuring the service life of the entire measuring device, and overcoming the deficiencies of the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A micro differential pressure induction measuring device includes a bottom cover. Fixed ears are connected to the outer walls on both sides of the bottom cover. A water inlet pipe and a water outlet pipe are respectively connected to the two fixed ears and the side wall of the bottom cover. An upper cover is arranged at the upper end of the bottom cover. An elastic support mechanism is arranged at the bottom of the inner wall of the upper cover, and a pressure detection component is connected to the top end of the inner wall of the upper cover;

[0007] The water inlet pipe is L-shaped, and the vertical section of the water inlet pipe is located inside the bottom cover.

[0008] Through the above scheme, by the combined use of the elastic support mechanism and the pressure detection component, the pressure of water flowing through the bottom cover can be effectively detected, and the wear of the entire measuring device is small, effectively ensuring the service life of the entire measuring device.

[0009] Preferably, the elastic support mechanism includes two installation grooves symmetrically opened on the inner side wall of the upper cover. Connecting rods are fixed in both installation grooves. A movable plate is slidably sleeved on the two connecting rods. Springs are sleeved on the parts of the two connecting rods above the movable plate. Blocks are connected to the bottom ends of the two connecting rods.

[0010] Preferably, the pressure detection component includes a pressure sensor fixed to the top end of the inner wall of the upper cover, and a contact plate is connected to the lower end of the pressure sensor.

[0011] Preferably, the pressure detection component further includes a display screen connected to the pressure sensor through a wire. The display screen is fixed to the upper end face of the upper cover, and the wire passes through the upper cover.

[0012] Preferably, a gap is provided between the lower end face of the contact plate and the upper end face of the movable plate.

[0013] Preferably, two connecting lugs are symmetrically fixed to the outer side of the side wall of the upper cover, and the two connecting lugs are respectively connected to the two fixing lugs through bolts.

[0014] Preferably, a bayonet is provided at the top end of the inner wall of the bottom cover, and the lower end of the upper cover is inserted into the bayonet.

[0015] The beneficial effects of the present utility model are as follows:

[0016] By the combined use of the elastic support mechanism and the pressure detection component provided, the pressure of the water flowing through the bottom cover can be effectively detected, and the wear of the entire measuring device is small, effectively ensuring the service life of the entire measuring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. 1 is a schematic perspective view of a first perspective of a differential pressure induction measuring device proposed by the present utility model.

[0018] Figure 2 FIG. 2 is a schematic perspective view of a second perspective of a differential pressure induction measuring device proposed by the present utility model.

[0019] Figure 3 FIG. 3 is a schematic structural view of the bottom cover of a differential pressure induction measuring device proposed by the present utility model.

[0020] Figure 4 FIG. 4 is a schematic partial sectional view of the upper cover of a differential pressure induction measuring device proposed by the present utility model.

[0021] Figure 5 FIG. 5 is a schematic enlarged view of part A of a differential pressure induction measuring device proposed by the present utility model. Figure 4 FIG. 5

[0022] In the figure: 1, bottom cover; 2, upper cover; 3, fixing lug; 4, water inlet pipe; 5, connecting lug; 6, display screen; 7, wire; 8, water outlet pipe; 9, bayonet; 10, pressure sensor; 11, contact plate; 12, movable plate; 13, installation groove; 14, connecting rod; 15, spring; 16, stop block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0024] Embodiment 1, referring to Figures 1-5 , a differential pressure induction measurement device, including a bottom cover 1. Fixed ears 3 are connected to the outer walls on both sides of the bottom cover 1. A water inlet pipe 4 and a water outlet pipe 8 are respectively connected to the two fixed ears 3 and the side wall of the bottom cover 1. An upper cover 2 is provided at the upper end of the bottom cover 1. An elastic support mechanism is provided at the bottom of the inner wall of the upper cover 2, and a pressure detection component is connected to the top of the inner wall of the upper cover 2;

[0025] The water inlet pipe 4 is L-shaped, and the vertical section of the water inlet pipe 4 is located inside the bottom cover 1;

[0026] The elastic support mechanism includes two installation grooves 13 symmetrically opened on the inner side walls of the upper cover 2. Connecting rods 14 are fixed in both installation grooves 13. A movable plate 12 is slidably sleeved on the two connecting rods 14. Springs 15 are sleeved on the parts of the two connecting rods 14 above the movable plate 12. Blocks 16 are connected to the bottom ends of the two connecting rods 14;

[0027] The pressure detection component includes a pressure sensor 10 fixed to the top of the inner wall of the upper cover 2. A contact plate 11 is connected to the lower end of the pressure sensor 10. There is a gap between the lower end surface of the contact plate 11 and the upper end surface of the movable plate 12;

[0028] The pressure detection component further includes a display screen 6 connected to the pressure sensor 10 through a wire 7. The display screen 6 is fixed to the upper end surface of the upper cover 2, and the wire 7 passes through the upper cover 2;

[0029] Two connecting ears 5 are symmetrically fixed to the outside of the side wall of the upper cover 2. The two connecting ears 5 are respectively connected to the two fixed ears 3 by bolts;

[0030] A bayonet 9 is opened at the top of the inner wall of the bottom cover 1, and the lower end of the upper cover 2 is inserted into the bayonet 9.

[0031] Working principle: Water sprays upward from the vertical section of the water inlet pipe 4. The impact force of the water causes the movable plate 12 to move upward by a certain distance. The two springs 15 are compressed, and the movable plate 12 presses against the contact plate 11. And the pressure sensor 10 detects the pressure received by the contact plate 11 and transmits the pressure information to the display screen 6 for display. When the water flow is unstable, the impact force received by the movable plate 12 changes, and the pressure detected by the pressure sensor 10 will change. Thus, the instability of the liquid flow can be detected. Through the downward rebound action of the two springs 15 on the movable plate 12, the movable plate 12 is stably sleeved on the two connecting rods 14, effectively ensuring the service life of the entire measurement device.

[0032] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, making equivalent substitutions or changes should be covered within the protection scope of the present utility model.

Claims

1. A differential pressure induction measurement device, comprising a bottom cover (1), characterized in that, Both outer walls on two sides of the bottom cover (1) are connected with fixing ears (3). A water inlet pipe (4) and a water outlet pipe (8) are respectively connected to the two fixing ears (3) and the side wall of the bottom cover (1). An upper cover (2) is arranged at the upper end of the bottom cover (1). An elastic support mechanism is arranged at the bottom of the inner wall of the upper cover (2), and a pressure detection component is connected to the top end of the inner wall of the upper cover (2). The water inlet pipe (4) is in an L shape, and the vertical section of the water inlet pipe (4) is inside the bottom cover (1).

2. The micro differential pressure induction measurement device according to claim 1, wherein The elastic support mechanism includes two installation grooves (13) symmetrically formed on the inner side walls of the upper cover (2). Connecting rods (14) are fixed in both of the two installation grooves (13). A movable plate (12) is slidably sleeved on the two connecting rods (14). Springs (15) are sleeved on the parts of the two connecting rods (14) above the movable plate (12). Blocks (16) are connected to the bottom ends of the two connecting rods (14).

3. A differential pressure induction measurement device according to claim 2, characterized in that, The pressure detection component includes a pressure sensor (10) fixed to the top end of the inner wall of the upper cover (2). A contact plate (11) is connected to the lower end of the pressure sensor (10).

4. The micro differential pressure induction measurement device according to claim 3, characterized in that, The pressure detection component further includes a display screen (6) connected to the pressure sensor (10) through a wire (7). The display screen (6) is fixed to the upper end face of the upper cover (2), and the wire (7) passes through the upper cover (2).

5. A micro differential pressure induction measurement device according to claim 4, characterized in that, There is a gap between the lower end face of the contact plate (11) and the upper end face of the movable plate (12).

6. A differential pressure induction measurement device according to claim 1, characterized in that, Two connecting ears (5) are symmetrically fixed outside the side wall of the upper cover (2). The two connecting ears (5) are respectively connected to the two fixing ears (3) through bolts.

7. A micro differential pressure induction measurement device according to claim 6, characterized in that, A bayonet (9) is formed at the top end of the inner wall of the bottom cover (1). The lower end of the upper cover (2) is inserted into the bayonet (9).

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