Insertion type backwash differential pressure liquid level transmitter

Abstract

The utility model relates to a kind of plug-in backwash differential pressure liquid level transmitter, including transmitter body, balance valve body, differential pressure liquid communication pipeline, flange connecting plate, flush self-closing joint, flush external pipeline, composite parallel pipeline, plug-in differential pressure probe, the transmitter body is fixed on balance valve body, the differential pressure liquid communication pipeline is connected in parallel on balance valve body, the end of the differential pressure liquid communication pipeline passes through flange connecting plate and is connected with composite parallel pipeline, the outer end of the flush external pipeline is connected with flush self-closing joint, the end of the flush external pipeline passes through flange connecting plate and is connected with composite parallel pipeline, the plug-in differential pressure probe is connected in the side end of composite parallel pipeline.The utility model optimizes the setting of differential pressure liquid level transmitter, improves as a kind of liquid level transmitter with backwash function, and design uses the design of plug-in, increases the measurement condition and application range of transmitter, in addition, structural design is simple, reliability and stability are improved, and it is suitable for use.

Description

Technical Field

[0001] This utility model relates to the field of testing instruments, and in particular to an insertion-type backflushing differential pressure level transmitter. Background Technology

[0002] In industrial production processes, the accurate measurement and control of liquid level, flow rate, and pressure are crucial, directly affecting production safety, efficiency, and product quality. While traditional differential pressure level transmitters can meet measurement requirements under certain conditions, they often suffer from inaccurate measurements and probe blockage when dealing with media containing solid particles, viscous substances, or prone to scaling, affecting the reliability and stability of the measurement. Therefore, an insertion-type backflushing differential pressure level transmitter was designed. Utility Model Content

[0003] The purpose of this utility model is to provide an insertion-type backflushing differential pressure level transmitter to solve the above-mentioned technical problems. To achieve the above purpose, this utility model adopts the following technical solution: An insertion-type backflushing differential pressure level transmitter includes a transmitter body, a balancing valve body, a differential pressure fluid connecting line, a flange connecting plate, a flushing self-closing connector, a flushing external line, a composite parallel line, and an insertion-type differential pressure probe. The transmitter body is fixed on the balancing valve body. The differential pressure fluid connecting line is connected in parallel to the balancing valve body. Two sets of flange connecting plates are provided. The end of the differential pressure fluid connecting line passes through the flange connecting plate and connects to the composite parallel line. The outer end of the flushing external line is connected to a flushing self-closing connector. The end of the flushing external line passes through the flange connecting plate and connects to the composite parallel line. Two sets of insertion-type differential pressure probes are provided, and the two sets of insertion-type differential pressure probes are respectively connected to the side ends of the two sets of composite parallel lines.

[0004] Based on the above technical solution, the insertion differential pressure probe consists of a probe housing, a differential pressure fluid connecting pipe, a flushing connecting pipe, an internal differential pressure sensing piston, and a flushing nozzle. The probe housing has a differential pressure sensing chamber and a flushing connecting channel inside. The differential pressure sensing chamber is located at the center of the probe housing. The differential pressure fluid connecting pipe and the flushing connecting pipe are arranged side-by-side on the bottom side of the probe housing, and the differential pressure fluid connecting pipe is connected to the differential pressure sensing chamber. The flushing connecting channel is symmetrically arranged on both sides of the probe housing, and the flushing connecting pipe is connected to the bottom end of the flushing connecting channel. The internal differential pressure sensing piston is located inside the differential pressure sensing chamber and can move up and down inside the chamber. The flushing nozzle is located on the top side of the flushing connecting channel and is inclined on the top side of the internal differential pressure sensing piston. The differential pressure fluid connecting pipe is connected to the differential pressure fluid connecting pipe via a composite parallel pipeline, and the flushing connecting pipe is connected to the external flushing pipeline via the composite parallel pipeline.

[0005] Compared with the prior art, the present invention has the following advantages: The present invention optimizes the setting of the differential pressure level transmitter, improves it into a level transmitter with backwashing function, and adopts an insertion design, which increases the measurement conditions and applicable range of the transmitter. In addition, the structural design is simple, and the reliability and stability are improved, making it suitable for widespread use. Attached Figure Description

[0006] Figure 1 This is a general appearance diagram of the present utility model.

[0007] Figure 2 This is a half-sectional schematic diagram of the insertion differential pressure probe of this utility model.

[0008] In the diagram: 1. Transmitter body; 2. Balance valve body; 3. Differential pressure fluid connecting line; 4. Flange connecting plate; 5. Flushing self-closing joint; 6. Flushing external line; 7. Composite parallel line; 8. Insertion type differential pressure probe; 9. Probe housing; 10. Differential pressure fluid connecting pipe; 12. Flushing connecting pipe; 13. Internal differential pressure sensing piston; 14. Flushing nozzle; 15. Differential pressure sensing chamber; 16. Flushing connecting channel. Detailed Implementation

[0009] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0010] An insertion-type backflushing differential pressure level transmitter includes a transmitter body 1, a balancing valve body 2, a differential pressure fluid connecting line 3, a flange connecting plate 4, a flushing self-closing connector 5, a flushing external line 6, a composite parallel line 7, and an insertion-type differential pressure probe 8. The transmitter body 1 is fixed on the balancing valve body 2. The differential pressure fluid connecting line 3 is connected in parallel to the balancing valve body 2. Two sets of flange connecting plates 4 are provided. The end of the differential pressure fluid connecting line 3 passes through the flange connecting plate 4 and connects to the composite parallel line 7. The outer end of the flushing external line 6 is connected to the flushing self-closing connector 5. The end of the flushing external line 6 passes through the flange connecting plate 4 and connects to the composite parallel line 7. Two sets of insertion-type differential pressure probes 8 are provided, and the two sets of insertion-type differential pressure probes 8 are respectively connected to the side ends of the two sets of composite parallel lines 7.

[0011] The above describes the overall components of the transmitter and their corresponding connections. See attached diagram. Figure 1 .

[0012] The insertion-type differential pressure probe 8 consists of a probe housing 9, a differential pressure fluid connecting pipe 10, a flushing connecting pipe 12, an internal differential pressure sensing piston 13, and a flushing nozzle 14. The probe housing 9 has a differential pressure sensing chamber 15 and a flushing connecting channel 16 inside. The differential pressure sensing chamber 15 is located at the center of the probe housing 9. The differential pressure fluid connecting pipe 10 and the flushing connecting pipe 12 are arranged side-by-side on the bottom side of the probe housing 9. The differential pressure fluid connecting pipe 10 communicates with the differential pressure sensing chamber 15. The flushing connecting channel 16 is symmetrically arranged on both sides of the probe housing 9. On the side, the flushing connecting pipe 12 is connected to the bottom end of the flushing connecting channel 16. The internal differential pressure sensing piston 13 is disposed inside the differential pressure sensing chamber 15 and can move up and down inside the differential pressure sensing chamber 15. The flushing nozzle 14 is disposed on the top side of the flushing connecting channel 16 and is inclinedly disposed on the top side of the internal differential pressure sensing piston 13. The differential pressure fluid connecting pipe 10 is connected to the differential pressure fluid connecting pipe 3 through the composite parallel pipeline 7. The flushing connecting pipe 12 is connected to the flushing external pipe 6 through the composite parallel pipeline 7.

[0013] The above describes the structural composition, connection relationships, and positional relationships of the insertion-type differential pressure probe 8. (See attached diagram.) Figure 2 .

[0014] In practical applications, the transmitter works as follows: When the transmitter starts working, the differential pressure fluid connection line transmits the pressure change in the medium to the transmitter body 1. The transmitter body 1 converts the pressure signal into an electrical signal through an internal sensor. Simultaneously, the differential pressure fluid connection line in the insertion-type differential pressure probe introduces the medium into the differential pressure sensing chamber 15. The internal differential pressure sensing piston 13 moves up and down within the chamber according to the pressure difference. This movement is converted into a measurable electrical signal, thereby reflecting parameters such as liquid level and pressure.

[0015] When solid particles, viscous substances, or scale accumulate on the probe surface or inside the differential pressure sensing chamber, cleaning fluid can be introduced through the flushing external pipeline. The cleaning fluid enters the flushing external pipeline 6 via the flushing self-closing connector 5, and is then distributed to each flushing connecting channel 16 through the composite parallel pipeline 7. Finally, it is sprayed out at an inclined angle from the flushing nozzle 14, directly flushing the top of the internal differential pressure sensing piston 13 and the top sidewall of the differential pressure sensing chamber 15, effectively removing the deposits and restoring the probe's measurement accuracy. The entire backflushing process can be completed online without disassembling the probe, significantly improving the equipment's maintenance efficiency and operational reliability.

[0016] The above description is a preferred embodiment of the present utility model. For those skilled in the art, any changes, modifications, substitutions and variations made to the implementation methods without departing from the principles and spirit of the present utility model, based on the teachings of the present utility model, still fall within the protection scope of the present utility model.

Claims

1. A plug-and-play backflushing differential pressure level transmitter, characterized in that, The device includes a transmitter body (1), a balance valve body (2), a differential pressure fluid connecting line (3), a flange connecting plate (4), a flushing self-closing connector (5), a flushing external line (6), a composite parallel line (7), and an insertion differential pressure probe (8). The transmitter body (1) is fixed on the balance valve body (2). The differential pressure fluid connecting line (3) is connected in parallel to the balance valve body (2). The flange connecting plate (4) is provided in two sets. The end of the differential pressure fluid connecting line (3) passes through the flange connecting plate (4) and connects to the composite parallel line (7). The outer end of the flushing external line (6) is connected to the flushing self-closing connector (5). The end of the flushing external line (6) passes through the flange connecting plate (4) and connects to the composite parallel line (7). The insertion differential pressure probe (8) is provided in two sets. The two sets of insertion differential pressure probes (8) are respectively connected to the side ends of the two sets of composite parallel lines (7).

2. An insertion type backwash differential pressure liquid level transmitter according to claim 1, wherein, The insertion-type differential pressure probe (8) consists of a probe housing (9), a differential pressure fluid connecting pipe (10), a flushing connecting pipe (12), an internal differential pressure sensing piston (13), and a flushing nozzle (14). The probe housing (9) has a differential pressure sensing chamber (15) and a flushing connecting channel (16) inside. The differential pressure sensing chamber (15) is located at the center of the probe housing (9). The differential pressure fluid connecting pipe (10) and the flushing connecting pipe (12) are arranged side by side on the bottom side of the probe housing (9). The differential pressure fluid connecting pipe (10) is connected to the differential pressure sensing chamber (15). The flushing connecting channel (16) is symmetrically arranged in the probe housing (9). On both sides, the flushing connecting pipe (12) is connected to the bottom end of the flushing connecting channel (16). The internal differential pressure sensing piston (13) is set inside the differential pressure sensing chamber (15) and can move up and down inside the differential pressure sensing chamber (15). The flushing nozzle (14) is set on the top side of the flushing connecting channel (16) and is inclined on the top side of the internal differential pressure sensing piston (13). The differential pressure liquid connecting pipe (10) is connected to the differential pressure liquid connecting pipeline (3) through the composite parallel pipeline (7). The flushing connecting pipe (12) is connected to the flushing external pipeline (6) through the composite parallel pipeline (7).

Images