High-precision static leveling instrument

Abstract

The invention relates to the technical field of static force level gauges, in particular to a high-precision static force level gauge which comprises an instrument shell and a measuring assembly, the measuring assembly comprises an instrument cover body, two socket units, a communicated coplanar flange and two sealing rings, and the communicated coplanar flange is provided with an air inlet hole, an air outlet hole, a liquid inlet hole and a liquid outlet hole. The air inlet, the air outlet, the liquid inlet and the liquid outlet are respectively provided with a pipeline, and a liquid path is connected with a differential pressure sensor in the diaphragm capsule through a three-way structure in the communicated coplanar flange, a liquid communication hole and a high-pressure side hole of the diaphragm capsule; a gas circuit passes through a three-way structure in the communicated coplanar flange and is connected with a differential pressure sensor through a gas communication hole and a diaphragm capsule low-pressure side hole, a plurality of high-precision static force level gauges are communicated, meanwhile, liquid and gas can be directly conveyed through the liquid circuit and the gas circuit on the communicated coplanar flange, and pressure difference caused by corners is avoided. And finally, the air pressure between the connected high-precision static force level gauges and the outside is kept unchanged.

Description

Technical Field

[0001] The invention relates to the technical field of static levels, and in particular to a high-precision static level. Background Art

[0002] The static level is an instrument used to measure height difference and height difference changes. It is installed in dams, high-rise buildings, tunnels and bridges, and multiple static levels are connected by liquid pipes. After the static level is placed at each measuring point, the differential pressure sensor in the static level monitors the pressure change and uses the principle of communicating vessels to open the law that the liquid level height in the connected containers is the same. The amount of settlement is determined by observing the change in liquid height in the static level during the settlement process, but high-precision liquid level sensors are very expensive and have a bottleneck in accuracy.

[0003] In the prior art, the device is composed of a large cylindrical cavity on the top, a small cylindrical cavity on the bottom, a temperature sensor, a resistance sensor, a semipermeable membrane, a relaxed water-proof membrane and a shell. It has a simple structure and is connected to an external fixed reference liquid level container by an external water pipe at the bottom. The volume of fresh water entering can be calculated by testing the resistance change before and after, and then the settlement value of the measuring point can be calculated by correcting it according to the temperature tested by the temperature sensor. The device is easy to operate and can be calculated with high accuracy through the corrected data.

[0004] However, in the aforementioned prior art, after the liquid enters the liquid inlet of the level, it needs to be discharged from the liquid outlet located on the other side of the level. The liquid path will form a corner inside the level, which is likely to cause pressure difference and affect accuracy. Summary of the invention

[0005] The purpose of the present invention is to provide a high-precision static level, which solves the problem in the prior art that liquid and gas need to flow through the inside of the level during the transportation process, resulting in corners. Liquid and gas will produce pressure differences at the corners, and ultimately cause pressure differences between multiple connected high-precision static levels, affecting the measurement accuracy.

[0006] To achieve the above object, the present invention provides a high-precision static level, comprising an instrument housing and a measuring assembly; The measuring assembly includes a connecting coplanar flange and a diaphragm box, the connecting coplanar flange has an air inlet hole, an air outlet hole, a liquid inlet hole and a liquid outlet hole, the connecting coplanar flange also has a gas connecting hole and a liquid connecting hole, the connecting coplanar flange is bolted to the instrument housing, the gas connecting hole is connected to the air inlet hole and the air outlet hole, the liquid connecting hole is connected to the liquid inlet hole and the liquid outlet hole, the diaphragm box is arranged below the instrument housing, the diaphragm box has a diaphragm box high-pressure side hole and a diaphragm box low-pressure side hole, the liquid connecting hole is connected to the diaphragm box high-pressure side hole, and the gas connecting hole is connected to the diaphragm box low-pressure side hole.

[0007] Wherein, the measuring assembly also includes an instrument cover, two sealing rings and a nameplate. The instrument cover is threadedly connected to the upper side of the instrument housing, the nameplate is bolted to the instrument housing, and the two sealing rings are respectively located on the high-pressure side hole of the diaphragm box and the low-pressure side hole of the diaphragm box.

[0008] Wherein, the measuring component also includes two waterproof cable sockets, and the two waterproof cable sockets are symmetrically arranged on the instrument housing.

[0009] Wherein, the high-precision static level also includes two clamping assemblies, and the two clamping assemblies are symmetrically arranged on the instrument housing.

[0010] Wherein, the clamping assembly includes a rotating plate, two fixed blocks, fixing bolts, a support plate and two clamping units, the two fixed blocks are fixedly connected to the instrument housing and are located on one side of the instrument housing, one end of the rotating plate is rotatably connected to the two fixed blocks and is located between the two fixed blocks, the fixing bolts are arranged between the fixed block and the rotating plate, the support plate is fixedly connected to the rotating plate and is located at the other end of the rotating plate, and the two clamping units are symmetrically arranged on the support plate.

[0011] Wherein, the clamping unit includes a fixed plate, a rebound mechanism, an arc-shaped clamping plate, a shift block, an arc-shaped base and a plurality of anti-slip rubber blocks, the fixed plate is fixedly connected to the rotating plate and is located on one side of the rotating plate, the arc-shaped base is fixedly connected to the support plate and is located on one side of the support plate, the arc-shaped clamping plate is rotatably connected to the arc-shaped base and is located on one side of the arc-shaped base, the shift block is fixedly connected to the arc-shaped clamping plate and is located on the outside of the arc-shaped clamping plate, the rebound mechanism is arranged between the arc-shaped clamping plate and the fixed plate, and a plurality of anti-slip rubber blocks are sequentially arranged inside the arc-shaped clamping plate and the arc-shaped base.

[0012] Among them, the rebound mechanism includes a cylinder, a telescopic rod and a spring, the cylinder is rotatably connected to the fixed plate, one end of the telescopic rod is slidably connected to the cylinder, the other end of the telescopic rod is rotatably connected to the arc-shaped clamping plate, the two ends of the spring are respectively movably connected to one end of the telescopic rod and the inner wall of the cylinder, and the spring is located inside the cylinder.

[0013] A high-precision static level of the present invention, a differential pressure sensor is installed inside the diaphragm box, after the communicating coplanar flange is installed, pipes are installed at the air inlet, the air outlet, the liquid inlet and the liquid outlet respectively, the liquid enters the liquid circuit from the liquid inlet, then passes through the three-way structure formed by the liquid communicating hole and the high-pressure side hole of the diaphragm box, is connected to the differential pressure sensor inside the diaphragm box, and is finally discharged from the liquid outlet; the gas enters the gas circuit through the air inlet, then passes through the gas communicating hole and the low-pressure side hole of the diaphragm box to form a three-way structure. The three-way structure is connected to the differential pressure sensor, and then discharged from the air outlet, and connected with multiple levels in turn to form a connected level. Through the above-mentioned structural arrangement, through the liquid path and gas path of the connected coplanar flange, and connected with the differential pressure sensor through the three-way structure, multiple high-precision static levels are connected. At the same time, liquid and gas can be directly transported through the liquid path and gas path on the connected coplanar flange to avoid pressure difference caused by corners, and finally the multiple connected high-precision static levels are kept unchanged with the external air pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0015] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the present invention.

[0016] Figure 2 It is an overall side view of the first embodiment of the present invention.

[0017] Figure 3 The present invention Figure 2 AA line section view.

[0018] Figure 4 It is a structural schematic diagram of the communicating coplanar flange of the present invention.

[0019] Figure 5 It is a schematic diagram of the overall structure of the second embodiment of the present invention.

[0020] Figure 6 The present invention Figure 2 BB line cross-sectional view.

[0021] Figure 7 It is a schematic diagram of the overall structure of the third embodiment of the present invention.

[0022] 101-instrument housing, 102-diaphragm high-pressure side hole, 103-connecting coplanar flange, 104-sealing ring, 105-air inlet, 106-air outlet, 107-liquid inlet, 108-liquid outlet, 109-gas connecting hole, 110-liquid connecting hole, 111-diaphragm low-pressure side hole, 112-nameplate, 113-instrument cover, 114-diaphragm, 115-waterproof cable socket, 201-rotating plate, 202-fixing block, 203-fixing bolt, 204-support plate, 205-fixing plate, 206-arc clamping plate, 207-dial block, 208-arc base, 209-anti-slip rubber block, 210-cylinder, 211-telescopic rod, 212-spring, 301-mounting plate, 302-threaded rod, 303-turn handle, 304-threaded hole. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0024] First embodiment: See also Figures 1 to 4 The present invention provides a high-precision static level, including an instrument housing 101 and a measuring assembly, wherein the measuring assembly includes an instrument cover 113, two socket units, a communicating coplanar flange 103, two sealing rings 104 and a nameplate 112, wherein the communicating coplanar flange 103 has an air inlet 105, an air outlet 106, a liquid inlet 107 and a liquid outlet 108, and the communicating coplanar flange 103 also has a gas communicating hole 109 and a liquid communicating hole 110.

[0025] Among them, the communicating coplanar flange 103 also has a gas communicating hole and a liquid communicating hole, the communicating coplanar flange is bolted to the instrument housing, the gas communicating hole is connected to the air inlet hole and the air outlet hole, the liquid communicating hole is connected to the liquid inlet hole and the liquid outlet hole, the diaphragm box is arranged below the instrument housing, the diaphragm box has a diaphragm box high-pressure side hole and a diaphragm box low-pressure side hole, the liquid communicating hole is connected to the diaphragm box high-pressure side hole, and the gas communicating hole is connected to the diaphragm box low-pressure side hole. A differential pressure sensor is installed inside the diaphragm box 114. After the connecting coplanar flange 103 is installed, pipes are installed at the air inlet 105, the air outlet 106, the liquid inlet 107 and the liquid outlet 108 respectively. The liquid path passes through the three-way structure inside the connecting coplanar flange 103, passes through the liquid connecting hole 110 and the high-pressure side hole 102 of the diaphragm box, and is connected to the differential pressure sensor inside the diaphragm box 114; the gas path passes through the three-way structure inside the connecting coplanar flange 103, passes through the gas connecting hole 109 and the low-pressure side hole 111 of the diaphragm box and is connected to the differential pressure sensor, and can then be connected to various differential pressure transmitters or differential pressure sensors to form a connecting level; the circuit board inside the instrument housing 101 can be checked and maintained by opening and closing the instrument cover 113.

[0026] Secondly, the instrument cover 113 is threadedly connected to the upper side of the instrument housing 101, the nameplate 112 is bolted to the instrument housing 101, and the two sealing rings 104 are respectively located on the high-pressure side hole 102 of the diaphragm box and the low-pressure side hole 111 of the diaphragm box. The nameplate 112 is used to display device information. A circuit board is installed inside the instrument housing. The removal of the instrument cover facilitates maintenance and replacement of the circuit board installed inside the instrument housing.

[0027] Meanwhile, two waterproof cable sockets 115 are symmetrically arranged on the instrument housing 101. The waterproof cable sockets 115 can be used to power the level meter, and a differential pressure sensor is installed in the membrane box 114.

[0028] When using a high-precision static level of the present embodiment, a differential pressure sensor is installed inside the diaphragm box 114. After the communicating coplanar flange 103 is installed, pipes are installed at the air inlet 105, the air outlet 106, the liquid inlet 107 and the liquid outlet 108 respectively. The liquid path passes through the three-way structure inside the communicating coplanar flange 103, passes through the liquid communicating hole 110 and the high-pressure side hole 102 of the diaphragm box, and is connected to the differential pressure sensor inside the diaphragm box 114. The gas path passes through the three-way structure inside the communicating coplanar flange 103, passes through the gas communicating hole 110 and the high-pressure side hole 102 of the diaphragm box, and is connected to the differential pressure sensor inside the diaphragm box 114. The connecting hole 109 and the low-pressure side hole 111 of the diaphragm box are connected to a differential pressure sensor, and can then be connected to various differential pressure transmitters or differential pressure sensors to form a connected level; the circuit board inside the instrument housing 101 can be checked and maintained by opening and closing the instrument cover 113. Through the above-mentioned structural arrangement, multiple high-precision static levels are connected, and liquid and gas can be directly transported through the liquid and gas paths on the connected coplanar flange 103 to avoid pressure differences caused by corners, and ultimately keep the multiple connected high-precision static levels and the external air pressure unchanged.

[0029] Second embodiment: Based on the first embodiment, please refer to Figure 5 and Figure 6 The present invention provides a high-precision static level, which also includes two clamping assemblies, wherein the clamping assemblies include a rotating plate 201, two fixed blocks 202, a fixing bolt 203, a support plate 204 and two clamping units, wherein the clamping unit includes a fixed plate 205, a rebound mechanism, an arc-shaped clamping plate 206, a shift block 207, an arc-shaped base 208 and a plurality of anti-slip rubber blocks 209, and the rebound mechanism includes a cylinder 210, a telescopic rod 211 and a spring 212.

[0030] The two clamping assemblies are symmetrically arranged on the instrument housing 101. The clamping assemblies can clamp the pipes connected to the air outlet 106, the air inlet 105, the liquid outlet 108 and the liquid inlet 107 to prevent them from falling off and loosening easily, causing position deviation and affecting accuracy, thereby improving the stability of use.

[0031] Secondly, the two fixing blocks 202 are fixedly connected to the instrument housing 101 and are located on one side of the instrument housing 101. One end of the rotating plate 201 is rotatably connected to the two fixing blocks 202 and is located between the two fixing blocks 202. The fixing bolts 203 are arranged between the fixing blocks 202 and the rotating plate 201. The supporting plate 204 is fixedly connected to the rotating plate 201 and is located at the other end of the rotating plate 201. The two clamping units are symmetrically arranged on the supporting plate 204. The rotating plate 201 is rotated to a suitable position, and then the fixing bolts 203 are tightened to fix the rotating plate 201 so that it cannot rotate. The supporting plate 204 supports the clamping unit, and at this time, the pipe is clamped by the clamping unit.

[0032] At the same time, the fixed plate 205 is fixedly connected to the rotating plate 201 and is located on one side of the rotating plate 201, the arc base 208 is fixedly connected to the support plate 204 and is located on one side of the support plate 204, the arc clamping plate 206 is rotatably connected to the arc base 208 and is located on one side of the arc base 208, the shift block 207 is fixedly connected to the arc clamping plate 206 and is located on the outside of the arc clamping plate 206, the rebound mechanism is arranged between the arc clamping plate 206 and the fixed plate 205, and a plurality of anti-slip rubber blocks 209 are sequentially arranged inside the arc clamping plate 206 and the arc base 208. The fixed plate 205 supports the rebound mechanism and places the pipe on the arc base 208. The rebound mechanism drives the arc clamping plate 206 to rebound so that the pipe is clamped. At this time, the anti-slip rubber block 209 can play an anti-slip role and improve the clamping stability. The shifting block 207 can facilitate the shifting and opening of the arc clamping plate 206.

[0033] Finally, the cylinder 210 is rotatably connected to the fixed plate 205, one end of the telescopic rod 211 is slidably connected to the cylinder 210, the other end of the telescopic rod 211 is rotatably connected to the arc-shaped clamping plate 206, and both ends of the spring 212 are movably connected to one end of the telescopic rod 211 and the inner wall of the cylinder 210, respectively, and the spring 212 is located inside the cylinder 210. The spring 212 rebounds, driving the telescopic rod 211 to slide inside the cylinder 210, so that the arc-shaped clamping plate 206 rotates to clamp the pipe.

[0034] When using a high-precision static level of the present embodiment, the rotating plate 201 is rotated to a suitable position, and then the fixing bolt 203 is tightened to fix the rotating plate 201 so that it cannot rotate. At this time, the pipeline is placed on the arc base 208, and the spring 212 rebounds to drive the telescopic rod 211 to slide in the cylinder 210, so that the arc clamping plate 206 rotates to clamp the pipeline. At this time, the anti-slip rubber block 209 can play an anti-slip role and improve the clamping stability. The shifting block 207 can be easily shifted to open the arc clamping plate 206, thereby clamping the pipeline connected to the air outlet 106, the air inlet 105, the liquid outlet 108 and the liquid inlet 107 to prevent it from falling off and loosening easily, causing position deviation to affect the accuracy, thereby improving the stability of use.

[0035] Third embodiment: The high-precision static level also includes two reinforcement components, which are symmetrically arranged on the instrument housing 101. The reinforcement components include a mounting plate 301, a threaded rod 302 and a turning handle 303. The mounting plate 301 is fixedly connected to the instrument housing 101 and is located on one side of the instrument housing 101. The turning plate 201 has a threaded hole 304. The threaded rod 302 and the threaded hole 304 are mutually adapted. The turning handle 303 is fixedly connected to the threaded rod 302 and is located above the threaded rod 302.

[0036] Based on the second embodiment, please refer to Figure 7 The present invention provides a high-precision static level, which also includes two reinforcement components, and the reinforcement components include a mounting plate 301, a threaded rod 302 and a turning handle 303.

[0037] The two reinforcement components are symmetrically arranged on the instrument housing 101. The reinforcement components fix the unused rotating plate 201 to avoid accidental rotation.

[0038] Secondly, the mounting plate 301 is fixedly connected to the instrument housing 101 and is located on one side of the instrument housing 101. The rotating plate 201 has a threaded hole 304. The threaded rod 302 and the threaded hole 304 are mutually adapted. The turning handle 303 is fixedly connected to the threaded rod 302 and is located above the threaded rod 302. When the pipe does not need to be clamped, the fixing bolt 203 is loosened, and the rotating plate 201 is rotated so that the threaded hole 304 is located below the threaded rod 302. At this time, the fixing bolt 203 is tightened, and then the turning handle 303 is rotated to drive the threaded rod 302 to rotate and screw into the threaded hole 304. The threaded rod 302 is inserted into the mounting plate 301, and the mounting plate 301 plays a supporting role.

[0039] When using a high-precision static level of the present embodiment, when there is no need to clamp the pipe, loosen the fixing bolt 203, rotate the rotating plate 201 so that the threaded hole 304 is located below the threaded rod 302, tighten the fixing bolt 203, and then rotate the rotating handle 303 to drive the threaded rod 302 to rotate and screw into the threaded hole 304, thereby fixing the rotating plate 201 when it is not in use to avoid accidental rotation.

[0040] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A high-precision static level, comprising an instrument housing, characterized in that: Also included are measurement components; The measuring assembly includes a connecting coplanar flange and a diaphragm box, the connecting coplanar flange has an air inlet hole, an air outlet hole, a liquid inlet hole and a liquid outlet hole, the connecting coplanar flange also has a gas connecting hole and a liquid connecting hole, the connecting coplanar flange is bolted to the instrument housing, the gas connecting hole is connected to the air inlet hole and the air outlet hole, the liquid connecting hole is connected to the liquid inlet hole and the liquid outlet hole, the diaphragm box is arranged below the instrument housing, the diaphragm box has a diaphragm box high-pressure side hole and a diaphragm box low-pressure side hole, the liquid connecting hole is connected to the diaphragm box high-pressure side hole, and the gas connecting hole is connected to the diaphragm box low-pressure side hole.

2. The high-precision static level as claimed in claim 1, characterized in that: The measuring assembly also includes an instrument cover, two sealing rings and a nameplate. The instrument cover is threadedly connected to the upper side of the instrument housing, the nameplate is bolted to the instrument housing, and the two sealing rings are respectively located on the high-pressure side hole of the diaphragm box and the low-pressure side hole of the diaphragm box.

3. The high-precision static level as claimed in claim 2, characterized in that: The measuring component also includes two waterproof cable sockets, which are symmetrically arranged on the instrument housing.

4. The high-precision static level as claimed in claim 3, characterized in that: The high-precision static level also includes two clamping assemblies, and the two clamping assemblies are symmetrically arranged on the instrument housing.

5. The high-precision static level as claimed in claim 4, characterized in that: The clamping assembly includes a rotating plate, two fixed blocks, fixing bolts, a supporting plate and two clamping units. The two fixing blocks are fixedly connected to the instrument housing and are located on one side of the instrument housing. One end of the rotating plate is rotatably connected to the two fixed blocks and is located between the two fixed blocks. The fixing bolts are arranged between the fixed block and the rotating plate. The supporting plate is fixedly connected to the rotating plate and is located at the other end of the rotating plate. The two clamping units are symmetrically arranged on the supporting plate.

6. The high-precision static level as claimed in claim 5, characterized in that: The clamping unit includes a fixed plate, a rebound mechanism, an arc-shaped clamping plate, a shift block, an arc-shaped base and a plurality of anti-slip rubber blocks, the fixed plate is fixedly connected to the rotating plate and is located on one side of the rotating plate, the arc-shaped base is fixedly connected to the supporting plate and is located on one side of the supporting plate, the arc-shaped clamping plate is rotatably connected to the arc-shaped base and is located on one side of the arc-shaped base, the shift block is fixedly connected to the arc-shaped clamping plate and is located on the outside of the arc-shaped clamping plate, the rebound mechanism is arranged between the arc-shaped clamping plate and the fixed plate, and a plurality of anti-slip rubber blocks are sequentially arranged inside the arc-shaped clamping plate and the arc-shaped base.

7. The high-precision static level according to claim 6, characterized in that: The rebound mechanism includes a cylinder, a telescopic rod and a spring. The cylinder is rotatably connected to the fixed plate, one end of the telescopic rod is slidably connected to the cylinder, and the other end of the telescopic rod is rotatably connected to the arc-shaped clamping plate. Both ends of the spring are movably connected to one end of the telescopic rod and the inner wall of the cylinder respectively, and the spring is located inside the cylinder.

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