CN-224216130-U - Double-flange liquid level meter with anti-scaling device

Abstract

The utility model provides a double-flange liquid level meter with an anti-scaling device, which comprises flange assemblies, isolating diaphragms, capillaries and a differential pressure transmitter, wherein the two flange assemblies are respectively arranged on connecting pipes protruding from the bottom and the top of the side wall of a storage tank, each flange assembly is provided with the isolating diaphragm, each isolating diaphragm is respectively connected with the differential pressure transmitter through the capillary filled with a transmission medium, and each flange assembly is respectively provided with the anti-scaling device. The anti-scaling device is characterized in that the transmission rod is arranged on the flange, the transmission rod is connected with the stirring blade, the stirring blade moves through the transmission rod at regular time according to the characteristics of materials in the storage tank, so that the stirring blade can slowly reciprocate in the connecting pipe, the materials in the connecting pipe can be circularly updated, the dead zone at the front end of the flange assembly is eliminated, scaling at the isolation diaphragm is reduced, the maintenance period of the flange is prolonged, and the maintenance cost is reduced.

Inventors

• LIN GANG
• YANG SEN
• WANG FUCHENG
• ZHAO ZHIDONG
• LI CHUNYUAN
• SHEN JIAN
• ZHANG ZHONGHOU
• ZHANG YAN
• QI FANGYI

Assignees

• 北方华锦化学工业股份有限公司

Dates

Publication Date

20260508

Application Date

20250527

Claims (10)

1. 1. The double-flange liquid level meter with the anti-scaling device comprises flange assemblies, isolation diaphragms, capillaries and a differential pressure transmitter, wherein the two flange assemblies are respectively arranged on connecting pipes protruding out of the bottom and the top of the side wall of a storage tank, each flange assembly is provided with the isolation diaphragm, each isolation diaphragm is respectively connected with the differential pressure transmitter through the capillary filled with a transmission medium, and the double-flange liquid level meter is characterized in that each flange assembly is respectively provided with the anti-scaling device.
2. 2. The double-flange liquid level meter with the anti-scaling device according to claim 1, wherein the anti-scaling device comprises a transmission rod and stirring blades, each flange component is provided with the transmission rod, the transmission rod stretches into an inner cavity of the connecting pipe, the front end of the transmission rod is connected with the stirring blades, and the transmission rod can move along the axial direction of the connecting pipe so as to drive the stirring blades to move, so that materials in the connecting pipe generate vortex, and scaling of the materials at the isolating diaphragm is prevented.
3. 3. A dual flange level gauge having an anti-fouling device as defined in claim 2, wherein a drive rod is mounted to each of the top and bottom of each flange assembly.
4. 4. A dual flange level gauge having an anti-fouling device as defined in claim 2, wherein said stirring blade is semi-arcuate.
5. 5. A dual flange level gauge with an anti-fouling device as claimed in claim 2, wherein the stirring vane is provided with crescent shaped teeth.
6. 6. A double flange level gauge with anti-fouling device according to claim 2, wherein the transmission rod is moved by manual or electric driving means.
7. 7. The double-flange liquid level meter with the anti-scaling device according to claim 1, wherein the anti-scaling device comprises a transmission rod, a fixed head, a movable threaded rod, stirring blades and tooth plates, wherein the transmission rod is arranged at the top of each flange assembly and extends into an inner cavity of a connecting pipe, the fixed head is arranged at the front end of each transmission rod, the movable threaded rod is arranged at the bottom of each flange assembly, the stirring blades are of an annular structure, a groove track is arranged on the side of the annular structure, threads are arranged on an outer ring, a plurality of tooth plates are arranged on an inner ring, the fixed heads are embedded into the groove track, the stirring blades are meshed with the spiral grooves of the movable threaded rod through the threads of the outer ring, the transmission rod can move along the axial direction of the connecting pipe, axial movement of the stirring blades and circumferential rotation of the stirring blades and the tooth plates on the stirring blades is realized through the cooperation of the fixed heads and the groove track, so that materials in the connecting pipe generate vortex, and scaling of the materials in the isolating diaphragm is prevented.
8. 8. The dual flange level gauge with anti-fouling device of claim 7, wherein the stationary head is a circular stationary head.
9. 9. The double flange level gauge with anti-fouling device of claim 7, wherein the stirring vane is provided with crescent shaped teeth.
10. 10. The double flange level gauge with anti-fouling device of claim 7, wherein the drive rod is moved by manual or electric actuation.

Description

Double-flange liquid level meter with anti-scaling device Technical Field The utility model belongs to the technical field of liquid level measurement, and particularly relates to a double-flange liquid level meter with an anti-scaling device. Background The double flange liquid level meter is one kind of differential pressure liquid level meter for measuring liquid level or interface height, and is widely used in industrial process control and mainly includes flange assembly, isolating diaphragm, capillary tube and differential pressure transmitter. The high pressure side flange is installed at the bottom of the container or at the lower limit of the liquid level to contact the hydrostatic pressure, and the low pressure side flange is installed at the top of the container or at the upper limit of the liquid level to contact the gas phase pressure (or reference pressure). The isolating diaphragm is used as a flange end elastic element for isolating media and sensing static pressure and gas phase pressure. The capillary tube is filled with a transmission medium such as silicone oil, static pressure and gas phase pressure generated by the liquid level are respectively acted on the isolation diaphragms of the high-pressure side flange and the low-pressure side flange, the capillary tube transmits the isolation diaphragms to the differential pressure transmitter under pressure, the differential pressure transmitter receives two pressure signals, the pressure difference at the flanges at the two sides is calculated, and 4-20 mA signals proportional to the liquid level are output, so that the measurement of the liquid level is realized. In the actual production process, as the flanges of most of the double-flange liquid level meters are connected to the connecting pipes protruding laterally of the storage tank, blind areas are easy to form because of no flow of media in the connecting pipes, scale formation can occur at the isolation diaphragm during long-time measurement, and if the storage tank is internally provided with substances easy to crystallize or self-polymerize, crystals or self-polymerizing substances can be formed in the connecting pipes, so that the measurement accuracy is influenced. At this time, the flange is required to be detached for cleaning and maintenance, thereby increasing the workload of personnel. Disclosure of utility model First, the technical problem to be solved The utility model provides a double-flange liquid level meter with an anti-scaling device, which aims to solve the technical problems of eliminating a blind area at the front section of a flange, reducing scaling at an isolation diaphragm, prolonging the maintenance period of the flange and reducing the maintenance cost. (II) technical scheme In order to solve the technical problems, the utility model provides a double-flange liquid level meter with an anti-scaling device, which comprises flange assemblies, isolation diaphragms, capillaries and a differential pressure transmitter, wherein the two flange assemblies are respectively arranged on connecting pipes protruding out of the bottom and the top of the side wall of a storage tank, each flange assembly is provided with the isolation diaphragm, each isolation diaphragm is respectively connected with the differential pressure transmitter through the capillary filled with a transmission medium, and each flange assembly is respectively provided with the anti-scaling device. Further, the anti-scaling device comprises a transmission rod and a stirring blade; wherein, install the transfer line on every flange subassembly respectively, the transfer line stretches into the inner chamber of connecting pipe, and the front end of transfer line is connected with stirring vane, and the transfer line can remove along the axial direction of connecting pipe, and then drives stirring vane and remove to make the material in the connecting pipe produce the vortex, prevent that the material from taking place the scale deposit in isolation diaphragm department. Further, a transmission rod is respectively arranged at the top and the bottom of each flange assembly. Further, a crescent tooth piece is arranged on the stirring blade. Further, the transmission rod moves in a manual or electric driving mode. The anti-scaling device comprises a transmission rod, a fixed head, a movable threaded rod, stirring blades and tooth plates, wherein the transmission rod is arranged at the top of each flange component and extends into an inner cavity of a connecting pipe, the front end of each transmission rod is provided with the fixed head, the bottom of each flange component is provided with the movable threaded rod, the stirring blades are of annular structures, groove tracks are arranged on the sides of the annular structures, threads are arranged on the outer ring, the inner ring is provided with the tooth plates, the fixed heads are embedded into the groove tracks, the stirring blades are meshed with th