CN208805192U - A kind of multidimensional measure device having pressure self-correcting - Google Patents

Abstract

The utility model discloses a kind of multidimensional measure devices for having pressure self-correcting, including shell, partition and PCB circuit main board, oval shaped cavity is provided in the shell above partition, the centre of oval shaped cavity and partition junction is provided with liquid-pressure pick-up, pressure sensor bottom is provided with the straight pipe through shell, L shape pipe is connected on the pipeline of straight pipe between PCB circuit main board and partition, the top end of L shape pipe extends in oval shaped cavity through partition, the upper and lower part of the inside of straight pipe and L shape pipe junction is respectively arranged with the second valve and third valve, the first valve and the 4th valve are provided in the pipe shaft that L shape pipe is located in partition, the turning point bottom of L shape pipe is provided with negative pressure compensating device, the pressure difference for realizing the fluid pressure in oval shaped cavity is zero, to effectively reduce liquid Generally existing " drift " problem of pressure sensor, can periodically carry out dynamic calibration correction, ensure that the precision of settlement measurement.

Description

A kind of multidimensional measure device having pressure self-correcting

Technical field

The utility model relates to Vertical Settlement field, specially a kind of multidimensional measure device for having pressure self-correcting.

Background technique

Vertical Settlement displacement is the highly important safe object of the engineering fields such as foundation pit, highway, railway, subway, underground engineering During reason amount, either construction or the operation of engineering, sedimentation and deformation can directly reflect engineering structure, the potential peace of geologic structure Full hidden danger, so, settlement monitoring has highly important status in security fields.On the other hand, engineering or geologic structure is heavy Drop monitoring is usually associated with other deformations, such as horizontal displacement, tilt displacement, during safety monitoring, needs a variety of variations The development trend and security level that data are mutually confirmed, comprehensive descision deforms；

Current surface displacement monitoring method is primarily present following both sides problem, and static liquid level core equipment is The linker system that several datum marks and monitoring point are connected by liquid line, if blocking or disconnected occurs for linker intermediate link It opens, then entire measuring system or part measuring point will be unable to work normally, while in the link of linker, staff can not be straight The error condition of the inspection detection device of sight in the process of running, can only be judged according to the display data of detection device, and Existing static pressure level system, calibration can not voluntarily be started by encountering the monitoring data under abnormal conditions, to influence Vertical Settlement The accuracy of monitoring data, as runing time increases, it is inclined that liquid-pressure pick-up can generate measurement under the influence of various factors Difference, this deviation are mainly shown as " drift ", and liquid level measured value is caused error occur, use the liquid level for having error Data, which carry out settlement calculation, can generate sedimentation error.

Summary of the invention

In order to overcome the shortcomings of prior art, the utility model provides a kind of multidimensional measure dress for having pressure self-correcting It sets, can effectively solve the problem of background technique proposes.

The technical scheme adopted by the utility model to solve the technical problem is as follows:

A kind of multidimensional measure device having pressure self-correcting, partition and PCB electricity including shell and setting in the housing Road mainboard is provided with oval shaped cavity, the intermediate setting of the oval shaped cavity and partition junction in the shell above partition Have liquid-pressure pick-up, the pressure sensor bottom is provided with the straight pipe through shell, be located at PCB circuit main board and every L shape pipe is connected on the pipeline of straight pipe between plate, the top end of the L shape pipe extends to oval shaped cavity through partition In, the upper and lower part of the inside of the straight pipe and L shape pipe junction is respectively arranged with the second valve and third valve, described The first valve and the 4th valve are provided in the pipe shaft that L shape pipe is located in partition, the turning point bottom of the L shape pipe is provided with negative Press compensation device.

Further, the negative pressure compensating device includes the double section pipes being connected on L shape pipe, axial inside double section pipes It is provided with telescopic rod, first piston and second piston are set on the telescopic rod, and the telescopic rod is located at the bottom of double section pipes It is provided with minitype piston bar.

Further, double section pipes include tapering pipe and constant pressure pipe, and described taper the straight of pipe and constant pressure pipe junction Diameter ratio is 2:1, and the diameter of the first piston, second piston is identical with the diameter of constant pressure pipe.

Compared with prior art, the utility model has the beneficial effects that

The utility model is by being arranged straight pipe and L shape pipe and negative pressure compensating dress in the bottom of liquid-pressure pick-up It sets and realizes that the pressure difference of the fluid pressure in oval shaped cavity is zero, so that it is generally existing effectively to reduce liquid-pressure pick-up " drift " problem can periodically carry out dynamic calibration correction, ensure that the precision of settlement measurement.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the negative pressure compensating apparatus structure schematic diagram of the utility model.

Figure label:

1- shell；2- partition；3-PCB circuit main board；4- oval shaped cavity；5- liquid-pressure pick-up；6- straight pipe；7-L Shape pipe；The second valve of 8-；9- third valve；The first valve of 10-；The 4th valve of 11-；12- negative pressure compensating device；

The bis- section pipes of 1201-；1202- telescopic rod；1203- first piston；1204- second piston；1205- minitype piston bar； 1206- tapers pipe；1207- constant pressure pipe.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

As depicted in figs. 1 and 2, the utility model provides a kind of multidimensional measure device for having pressure self-correcting, including shell The partition 2 and PCB circuit main board 3 of body 1 and setting within the case 1, are provided with oval shaped cavity in the shell above partition 2 4, the centre of 2 junction of the oval shaped cavity 4 and partition is provided with liquid-pressure pick-up 5, and 5 bottom of pressure sensor is set It is equipped with the straight pipe 6 through shell 1, is connected with L shape on the pipeline of the straight pipe 6 between PCB circuit main board 3 and partition 2 The top end of pipe 7, the L shape pipe 7 extends in oval shaped cavity 4 through partition 2,7 junction of the straight pipe 6 and L shape pipe The upper and lower part of inside be respectively arranged with the second valve 8 and third valve 9, the L shape pipe 7 is located at the pipe shaft in partition 2 In be provided with the first valve 10 and the 4th valve 11, the turning point bottom of the L shape pipe 7 is provided with negative pressure compensating device 12.

The working principle of fluid pressure sensing device 5 is: inside the top of liquid-pressure pick-up 5 and oval shaped cavity 4 Fluid contact, in normal work, the second valve 8 is opened, and with ambient air passage, the first valve 10 and third valve 9 are closed, at this time The data that pressure sensor 5 measures are fluid pressure, when generating over pressure calibration in oval shaped cavity 4, the second valve 8 It is closed with third valve 9, opens the first valve 10 and the 4th valve 11, so that the upper and lower surfaces of pressure sensor 5 are logical Road, the pressure value that liquid-pressure pick-up 5 measures at this time should be zero, if not zero illustrates that pressure sensor 5 has measurement and misses Difference, and error information detection is stored to storage unit integrated on PCB circuit main board 3, it is rear to close the first valve 10 and the 4th Valve 11, open third valve 9 will be discharged into except monitor by the fluid of the first valve 10, after third valve 9 is closed Restore to original state；

When generating negative pressure in oval shaped cavity 4, the pressure value that liquid-pressure pick-up 5 measures at this time should be negative, at this time The second valve 8 and third valve 9 are closed, the 4th valve 11 is opened, what negative pressure compensating device 12 integrated on PCB circuit main board 3 The lower work of MCU control, negative pressure compensating device 12 include the double section pipes 1201 being connected on L shape pipe 7, inside double section pipes 1201 It is axially provided with telescopic rod 1202, first piston 1203 and second piston 1204 is set on the telescopic rod 1202, and described stretch The bottom that contracting bar 1202 is located at double section pipes 1201 is provided with minitype piston bar 1205, and minitype piston bar 1205 drives telescopic rod 1202 It is moved up and down in double sections of pipes 1201, when closing the second valve 8 and third valve 9, second piston 1204 is located at double section pipes 1201 bottom, first piston 1203 are located inside double section pipes 1201, and telescopic rod 1202 is under the driving of minitype piston bar 1205 It moves up, so that there are gas in the cavity that first piston 1203 and second piston 1204 and double sections of pipes 1201 are formed, after It is continuous to move upwards, until first piston 1203 closes the 4th valve 11 so that gas enters inside L shape pipe 7, open the first valve Door 10, opens simultaneously the second valve 8 and third valve 9, to realize the ftercompction operation of 4 internal negative pressure of oval shaped cavity, hereafter again Under being worked normally, zero point school position under the negative pressure of liquid-pressure pick-up 5 is realized in valve folding.

Further, double sections of pipes 1201 include tapering pipe 1206 and constant pressure pipe 1207, and described taper pipe 1206 and constant pressure The diameter ratio of 1207 junction of pipe is 2:1, and the first piston 1203, the diameter of second piston 1204 and constant pressure pipe 1207 Diameter is identical, wherein tapering pipe 1206 is the tube body that caliber gradually decreases, enters in first piston 1203 and tapers pipe 1206 and perseverance When the junction of pressure pipe 1207, the second valve 8 and third valve 9 are closed, the 4th valve 11 is simultaneously closed off.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting Related claim.

Claims (3)

1. a kind of multidimensional measure device for having pressure self-correcting, including shell (1) and the partition (2) being arranged in shell (1) With PCB circuit main board (3), it is located in the shell (1) above partition (2) and is provided with oval shaped cavity (4), the oval shaped cavity (4) The centre of partition (2) junction is provided with liquid-pressure pick-up (5), it is characterised in that: the liquid-pressure pick-up (5) Bottom is provided with the straight pipe (6) through shell (1), the straight pipe (6) between PCB circuit main board (3) and partition (2) L shape pipe (7) is connected on pipeline, the top end of the L shape pipe (7) extends in oval shaped cavity (4) through partition (2), institute The upper and lower part for stating the inside of straight pipe (6) and L shape pipe (7) junction is respectively arranged with the second valve (8) and third valve (9), the first valve (10) and the 4th valve (11), the L shape are provided in the pipe shaft that the L shape pipe (7) is located in partition (2) The turning point bottom of pipe (7) is provided with negative pressure compensating device (12).

2. a kind of multidimensional measure device for having pressure self-correcting according to claim 1, it is characterised in that: the negative pressure is mended Repaying device (12) includes the double section pipes (1201) being connected on L shape pipe (7), and internal axial be provided with of double section pipes (1201) is stretched Contracting bar (1202) is set with first piston (1203) and second piston (1204), and the telescopic rod on the telescopic rod (1202) (1202) bottom for being located at double section pipes (1201) is provided with minitype piston bar (1205).

3. a kind of multidimensional measure device for having pressure self-correcting according to claim 2, it is characterised in that: double section pipes It (1201) include tapering pipe (1206) and constant pressure pipe (1207), and described pipe (1206) and constant pressure pipe (1207) junction of tapering Diameter ratio is 2:1, and the diameter phase of the first piston (1203), the diameter of second piston (1204) and constant pressure pipe (1207) Together.