Search

CN-122016750-A - Ultraviolet method total sulfur analyzer based on sample continuous sampling

CN122016750ACN 122016750 ACN122016750 ACN 122016750ACN-122016750-A

Abstract

The invention discloses an ultraviolet total sulfur analyzer based on continuous sample injection of a sample, which comprises an analyzer main body, wherein a continuous feeding unit capable of replacing a filter element in a non-stop state is arranged in the analyzer main body, the output end of the continuous feeding unit is provided with a feeding switching unit for stabilizing the pressure of output gas, the continuous feeding unit comprises a feeding guide pipe arranged in the analyzer main body, the pretightening force of a spring is regulated by a threaded rod, the target output gas pressure range of a pressure regulating valve is preset, a gas inlet channel is automatically opened when the gas pressure reaches a set interval in the working process, so that the gas enters the analyzer to finish detection at the stable pressure, and when the gas pressure exceeds the set range, the pressure regulating valve automatically opens a pressure relief channel to discharge redundant gas, thereby inhibiting pressure fluctuation. The mechanism realizes fine adjustment and self-adaptive stable control of the air pressure of the sample, and ensures the reliability and consistency of the air pressure condition in the detection process.

Inventors

  • JIANG YONGDONG
  • MEI QIHONG
  • CHEN TIANXIANG

Assignees

  • 北京戈韦尼克工程技术有限公司

Dates

Publication Date
20260512
Application Date
20260313

Claims (10)

  1. 1. The ultraviolet total sulfur analyzer based on continuous sample injection of a sample comprises an analyzer main body (1), and is characterized in that a continuous feeding unit (2) capable of replacing a filter element in a non-stop state is arranged in the analyzer main body (1), and a feeding switching unit (3) for stabilizing the pressure of output gas is arranged at the output end of the continuous feeding unit (2); The continuous feeding unit (2) comprises a feeding guide pipe (21) arranged in the analyzer main body (1), a movable filter element bracket (23) arranged in the feeding guide pipe (21) and capable of realizing filter element replacement on the premise of not generating leakage, and an auxiliary filter tube (22) arranged at the output end of the feeding guide pipe (21) and used for filtering gas in the filter element replacement process; The feeding switching unit (3) comprises a pressure regulating valve (33) arranged at the output end of the continuous feeding unit (2) and used for regulating the pressure of output gas, a regulating valve (32) arranged at the output end of the pressure regulating valve (33) and used for regulating a gas pipeline, and a one-way valve core (38) arranged inside the regulating valve (32) and used for blocking.
  2. 2. The ultraviolet total sulfur analyzer based on continuous sample introduction of the sample according to claim 1, wherein a limiting chute (26) is formed in the feeding guide pipe (21), a limiting slide block (25) is fixedly connected to the side face of the movable filter element support (23), and the limiting slide block (25) is slidably connected to the inside of the limiting chute (26).
  3. 3. The ultraviolet total sulfur analyzer based on continuous sample introduction of a sample according to claim 2, wherein a limit clamping rod (29) is fixedly connected to the side face of the movable filter element support (23), the limit clamping rod (29) is clamped inside the side face of the feeding guide pipe (21), a limiting block (27) is fixedly connected to the inside of the movable filter element support (23), and a detachable filter element (28) is clamped inside the movable filter element support (23).
  4. 4. The ultraviolet total sulfur analyzer based on continuous sample introduction of the sample as set forth in claim 3, wherein a resident filter element support (24) is slidably connected inside a side surface of the auxiliary filter tube (22), a resident filter element (211) is movably connected inside the resident filter element support (24), and an output end of the auxiliary filter tube (22) is fixedly connected with a gas pipe (210).
  5. 5. The ultraviolet total sulfur analyzer based on continuous sample introduction of the sample according to claim 4, wherein the outer surface of the regulating valve (32) is fixedly connected with a fixed bracket (31), the output end of the regulating valve (32) is fixedly connected with an air inlet pipe (34), and the inner side surface of the regulating valve (32) is rotatably connected with a regulating gear (35).
  6. 6. The ultraviolet total sulfur analyzer based on continuous sample introduction of a sample according to claim 5, wherein a driving rack (36) is slidably connected in the fixing support (31), a hydraulic telescopic rod (37) is fixedly connected to the other end of the fixing support (31), an output end of the hydraulic telescopic rod (37) is fixedly connected to the middle of the driving rack (36), and the adjusting gear (35) is meshed with the driving rack (36).
  7. 7. The ultraviolet total sulfur analyzer based on continuous sample introduction of the sample as set forth in claim 6, wherein the unidirectional valve core (38) is rotatably connected inside the adjusting valve (32), and one end of the unidirectional valve core (38) penetrates through the side surface of the adjusting valve (32) and is fixedly connected with the adjusting gear (35).
  8. 8. The ultraviolet total sulfur analyzer based on continuous sample introduction of the sample of claim 7, wherein the pressure regulating valve (33) is fixedly connected to the input end of the regulating valve (32), one end of the inside of the pressure regulating valve (33) is fixedly connected with a one-way valve (314), and the side surface of the pressure regulating valve (33) is internally connected with a threaded rod (310) in a threaded manner.
  9. 9. The ultraviolet total sulfur analyzer based on continuous sample introduction of the sample according to claim 8, wherein a push plate (39) is rotatably connected to one end of the outer surface of the threaded rod (310), the push plate (39) is slidably connected to the inside of the pressure regulating valve (33), and a spring (311) is fixedly connected to the side surface of the push plate (39).
  10. 10. The ultraviolet total sulfur analyzer based on continuous sample introduction of the sample of claim 9, wherein a sealing baffle plate (312) is fixedly connected to the other end of the spring (311), a high-pressure baffle plate (313) is fixedly connected to the side surface of the sealing baffle plate (312), a pressure relief opening (316) is formed in the top surface of the pressure regulating valve (33), and a feeding pipe (315) is fixedly connected to the bottom surface of the pressure regulating valve (33).

Description

Ultraviolet method total sulfur analyzer based on sample continuous sampling Technical Field The invention relates to the technical field of ultraviolet total sulfur analyzers, in particular to an ultraviolet total sulfur analyzer based on continuous sample injection of a sample. Background The ultraviolet total sulfur analyzer is an instrument for converting sulfur element in a sample into sulfur dioxide by utilizing an ultraviolet fluorescence principle, generating fluorescence by ultraviolet excitation and measuring the total sulfur content by detecting the fluorescence intensity. The method has the advantages that various samples such as petroleum, chemical products, environmental water samples and sulfur content in gas can be accurately and rapidly analyzed, key data support is provided for quality control in petrochemical industry, monitoring and controlling sulfur pollution in environmental protection and related scientific research work, and the method has important effects of guaranteeing product quality, maintaining ecological environment and the like; In the existing treatment mode of the total sulfur analyzer by an ultraviolet method, a single filter element is generally adopted to filter sample gas, the filter element cannot be replaced in a non-stop state, once the filter element is blocked or needs to be replaced, equipment is required to stop operation, so that a detection flow is interrupted, the detection efficiency is reduced, and the continuity of production or experimental processes is influenced; Therefore, the continuous feeding unit capable of replacing the filter element in the non-stop state is designed to realize the on-line replacement of the filter element in the operation process, and the feeding switching unit is matched to flexibly control the sample feeding path and the gas pressure and simultaneously clean the idle path. Disclosure of Invention The invention aims to provide an ultraviolet total sulfur analyzer based on continuous sample introduction of a sample, so as to solve the problems in the background technology. In order to solve the technical problems, the invention adopts the following technical scheme: The ultraviolet total sulfur analyzer based on continuous sample injection of the sample comprises an analyzer main body, wherein a continuous feeding unit capable of replacing a filter element in a non-stop state is arranged in the analyzer main body, and the output end of the continuous feeding unit is provided with a feeding switching unit for stabilizing the pressure of output gas; the continuous feeding unit comprises a feeding guide pipe arranged in the analyzer main body, a movable filter element bracket arranged in the feeding guide pipe and capable of realizing filter element replacement on the premise of not generating leakage, and an auxiliary filter tube arranged at the output end of the feeding guide pipe and used for filtering gas in the filter element replacement process; the feeding switching unit comprises a pressure regulating valve arranged at the output end of the continuous feeding unit and used for regulating the pressure of output gas, a regulating valve arranged at the output end of the pressure regulating valve and used for regulating a gas pipeline, and a one-way valve core arranged inside the regulating valve and used for blocking. The technical scheme of the invention is further improved in that a limiting chute is formed in the feeding guide pipe, a limiting slide block is fixedly connected to the side face of the movable filter element support, and the limiting slide block is slidably connected to the inside of the limiting chute. The technical scheme of the invention is further improved in that the side face of the movable filter element support is fixedly connected with a limiting clamping rod, the limiting clamping rod is clamped inside the side face of the feeding guide pipe, the inside of the movable filter element support is fixedly connected with a limiting block, and the inside of the movable filter element support is clamped with a detachable filter element. The technical scheme of the invention is further improved in that a resident filter element support is connected inside the side surface of the auxiliary filter tube in a sliding manner, a resident filter element is movably connected inside the resident filter element support, and the output end of the auxiliary filter tube is fixedly connected with a gas pipe. The technical scheme of the invention is further improved in that the outer surface of the regulating valve is fixedly connected with a fixed bracket, the output end of the regulating valve is fixedly connected with an air inlet pipe, and the inner part of the side surface of the regulating valve is rotationally connected with a regulating gear. The technical scheme of the invention is further improved in that a driving rack is connected inside the fixed support in a sliding manner, a hydraulic telescopic rod is fixe