Chromatograph control cabinet

Abstract

The utility model discloses a chromatograph control cabinet, which comprises a first cabinet body and a second cabinet body, the first cabinet body and the second cabinet body are arranged in parallel, the inner cavity of the first cabinet body is communicated with the inner cavity of the second cabinet body, a pretreatment device is embedded in the inner cavity of the first cabinet body, a chromatograph and a water analyzer are embedded in the second cabinet body, and the water analyzer is embedded in the inner cavity of the first cabinet body. A carrier gas storage tank is assembled on the side wall of the first cabinet body, the carrier gas storage tank, the pretreatment device, the chromatographic instrument and the water analyzer are connected through connecting pipelines, and an anti-explosion air conditioner is fixedly assembled on the side wall of the second cabinet body. During use, all devices for data analysis are located in the cabinet body, the stability of the use environment is improved, the environment in the first cabinet body and the environment in the second cabinet body can be in a constant-temperature state through the anti-explosion air conditioner arranged on the side wall of the second cabinet body, and therefore the accuracy of data detection can be improved in the process that the device is used for data detection; and the detection requirements of detection in different environments are met.

Description

Technical Field

[0001] The utility model relates to the technical field of chromatographs, in particular to a chromatograph control cabinet. Background Art

[0002] A chromatograph is a device used for chromatographic separation and analysis. It is mainly used in chemical products to analyze the content of certain substances in polymer materials. When an existing chromatograph is in use, the analysis results of the chromatograph are greatly affected by the on-site temperature, pressure, and flow rate. The chromatograph needs to run stably for several hours before analysis can be performed. Some usage environments cannot meet its usage requirements, resulting in inaccurate data detected during its use. At the same time, the chromatograph may need to mix the test gas and the carrier gas before testing to ensure the smooth progress of the test. However, the chromatograph in the prior art needs to perform the mixing operation manually and repeatedly, and it is difficult to ensure the mixing degree of the carrier gas and the sample gas to be tested. For this reason, we propose a chromatograph control cabinet. Utility Model Content

[0003] The purpose of the present invention is to provide a chromatograph control cabinet to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a chromatograph control cabinet, comprising a first cabinet body and a second cabinet body, the first cabinet body and the second cabinet body are arranged in parallel, the inner cavities of the first cabinet body and the second cabinet body are connected, the inner cavity of the first cabinet body is embedded with a pretreatment device, the second cabinet body is embedded with a chromatograph and a water analyzer, the side wall of the first cabinet body is equipped with a carrier gas storage tank, the carrier gas storage tank, the pretreatment device, the chromatograph and the water analyzer are connected by a connecting pipe, and the side wall of the second cabinet body is fixedly equipped with an explosion-proof air conditioner.

[0005] Preferably, the pretreatment device includes a sample selection module and a carrier gas processing module, the sample selection module and the carrier gas processing module are respectively connected to the connection end of the sample selection valve, and the sample selection valve is connected to the chromatograph through a connecting pipeline.

[0006] Preferably, the sample selection module includes a standard gas intake assembly and an ultra-pure ammonia detection intake assembly, the standard gas intake assembly includes a pressure reducing valve YV-6, the input end of the pressure reducing valve YV-6 is connected to the carrier gas storage tank, the output end of the pressure reducing valve YV-6 is fixedly connected to automatic valves AV-5, AV-6, and AV-7 through connecting pipes, the automatic valves AV-5, AV-6, and AV-7 are respectively connected to the sample gas injection pipes STD1, STD2 and the spare pipe, and the injection pipes STD1, STD2 and the spare pipe are connected to the connecting end of the sample selection valve.

[0007] Preferably, the ultra-pure ammonia detection intake assembly includes a pressure reducing valve YV-7, and the YV-7 is connected to automatic valves AV-1, AV-2, AV-3 and AV-4 respectively, and the automatic valves AV-1, AV-2, AV-3 and AV-4 are connected to intake pipes S10, S11, S12 and S13 respectively, and the intake pipes S10, S11, S12 and S13 are connected to the sample selection valve.

[0008] Preferably, the carrier gas processing module includes a purifier and a diluter, and the carrier gas processing module is assembled in the connecting pipeline between the pressure reducing valve YV-1 and the sample selection valve.

[0009] Preferably, the tops of the first cabinet and the second cabinet are fixedly equipped with hanging rings.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: a chromatograph control cabinet is provided, wherein a first cabinet body and a second cabinet body are provided in the present invention to respectively assemble various devices, and various devices for performing data analysis during use are located in the cabinet body, thereby improving the stability of the use environment; an explosion-proof air conditioner provided on the side wall of the second cabinet body can keep the environment in the first cabinet body and the second cabinet body in a constant temperature state, thereby improving the accuracy of data detection during data detection using the device, and meeting the detection requirements for detection in different environments;

[0011] A pretreatment device is provided in the first cabinet. By switching the pipelines in the standard gas inlet assembly and the ultra-pure ammonia detection inlet assembly in the pretreatment device, the vacuum and purge operations in the pipeline can be completed before the test. In addition, the sample gas to be tested can be fully mixed with the carrier gas before the test, which facilitates the subsequent chromatograph to test the sample gas and improves the efficiency of the sample gas detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of the utility model viewed from the left.

[0013] Figure 2 It is a three-dimensional diagram of the utility model viewed from the right.

[0014] Figure 3 It is a structural diagram of the present utility model.

[0015] Figure 4 This is a schematic structural diagram of the standard gas intake assembly of the present utility model.

[0016] Figure 5 This is a schematic diagram of the structure of the ultra-pure ammonia detection intake assembly of the utility model.

[0017] In the figure: 1. First cabinet, 2. Second cabinet, 3. Pretreatment device, 4. Chromatograph, 5. Water analyzer, 6. Carrier gas storage tank, 7. Explosion-proof air conditioner, 8. Lifting ring. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The utility model provides a technical solution: a chromatograph control cabinet, comprising a first cabinet 1 and a second cabinet 2, the first cabinet 1 and the second cabinet 2 are arranged in parallel, and the inner cavities of the first cabinet 1 and the second cabinet 2 are communicated with each other, the first cabinet 1 is equipped with a pretreatment device 3 for pretreatment of sample gas, the second cabinet 2 is equipped with a chromatograph 4 for detection and data analysis of sample gas, and the second cabinet 2 is also equipped with a water analyzer 5, and the second cabinet 2 is also fixedly equipped with a computer and a display screen, the electronic equipment in the first cabinet 1 and the second cabinet 2 are powered by an external power supply, the sample gas is analyzed by the chromatograph 4 and the water analyzer 5 according to the requirements of the experiment, and the measured experimental data is transmitted to the computer for display through the display screen.

[0020] like Figure 1 As shown in the figure, a carrier gas storage tank 6 is fixedly installed on the side wall of the first cabinet 1. The number of carrier gas storage tanks 6 is at least two. The two carrier gas storage tanks 6 are respectively connected and fixed to the side wall of the first cabinet 1 through a clamping frame. The two carrier gas storage tanks 6 are used to store helium and nitrogen, respectively. The two carrier gas storage tanks 6 are used to supply carrier gas to the pretreatment device 3, chromatograph 4 and water analyzer 5 in the first cabinet 1 and the second cabinet 2.

[0021] like Figure 2 As shown in the figure, the side wall of the second cabinet 2 is fixedly equipped with an explosion-proof air conditioner 7, the explosion-proof air conditioner 7 is electrically connected to the external power supply, and the explosion-proof air conditioner 7 is connected to the inner cavity of the second cabinet 2. The temperature during detection in the second cabinet 2 and the first cabinet 1 is adjusted by the explosion-proof air conditioner 7.

[0022] A lifting ring 8 is fixedly installed on the top of the first cabinet 1 and the second cabinet 2. By arranging the lifting ring 8 at the four corners of the top of the first cabinet 1 and the second cabinet 2, it is convenient to lift the first cabinet 1 and the second cabinet 2 and to adjust the position of the first cabinet 1 and the second cabinet 2.

[0023] like Figure 3As shown in , the pretreatment device 3 includes a sample selection module and a carrier gas processing module. The sample selection module includes a standard gas inlet assembly and an ultra-pure ammonia detection inlet assembly. The standard gas inlet assembly and the ultra-pure ammonia detection inlet assembly are respectively connected to the sample selection valve, and the sample selection valve is connected to the chromatograph through a connecting pipeline;

[0024] like Figure 4 As shown in , the standard gas inlet assembly includes a pressure reducing valve YV-6, and the carrier gas from the carrier gas pipeline enters the automatic valves AV-5, AV-6, and AV-7 from the pressure reducing valve YV-6. The automatic valves AV-5, AV-6, and AV-7 are respectively connected to the sample gas inlet pipelines STD1, STD2 and the spare pipeline. The carrier gas is mixed with the sample gas and then input into the sample selection valve, and then the gas is transmitted to the chromatograph 4 through the sample selection valve. Through this assembly, the sample gas and the carrier gas can be mixed before the chromatograph 4 performs data detection on the sample gas, and the sample gas can be pre-treated. STD1 is used for the entry of sample gas, and STD2 is used for the entry of purge gas;

[0025] like Figure 5 As shown in , the ultra-pure ammonia detection air intake assembly includes a pressure reducing valve YV-7, which is connected to automatic valves AV-1, AV-2, AV-3 and AV-4 respectively. AV-1, AV-2, AV-3 and AV-4 are connected to air intake pipes S10, S11, S12 and S13 respectively. S10, S11, S12 and S13 are used for the entry of sample gas, respectively. The sample gas is diverted by S10, S11, S12 and S13 and mixed with the carrier gas from the automatic valves AV-1, AV-2, AV-3 and AV-4. The mixed gas is concentrated and enters the sample selection valve. By setting this assembly, the mixing between the sample gas and the carrier gas is made more uniform.

[0026] like Figure 3 As shown in the figure, the carrier gas processing module is set in the connecting pipeline between the pressure reducing valve YV-1 and the sample selection valve, including a purifier and a diluter. The model of the purifier is HPC-9N-1. By setting the purifier and the diluter, the carrier gas entering the detection device is diluted to meet the standards for use.

[0027] like Figure 3 、 Figure 4 and Figure 5 As shown in , the pretreatment device 3 has multiple functions during use. By setting the pretreatment device 3, the sample gas and the purge gas can be switched before the chromatograph 4 detects the sample gas, and the vacuum and backflush operations can be performed on the pipeline in the entire device;

[0028] Pipeline vacuum treatment: Open the vacuum tube valve AV-10, pipeline switch valve AV-8, sample selection valve, and perform vacuum treatment on the entire pipeline through which the sample gas passes;

[0029] Pipeline purging: Open the carrier gas pipeline and purge the entire pipeline three times through the pressure reducing valve YV-1, control valve AV-54 (multi-channel optional), check valve CV-1 (multi-channel optional), return valve CV-6 (multi-channel optional), temperature and pressure transmitter, sample selection valve, pipeline switching valve AV-8, and vent pipeline valve AV-11;

[0030] Pipeline pressure protection treatment: If the pressure is too high, the safety valve SV-1, pipeline switch valve AV-8, and vent valve AV-11 will be opened for venting protection;

[0031] Replacement treatment of sample gas: Open the sample gas STD1 or STD2 pipeline according to the detection requirements, and replace the entire pipeline for 1 minute through the pressure reducing valve YV-2, control valve AV-1 (multi-channel optional), check valve CV-4 (multi-channel optional), temperature and pressure transmitter, sample selection valve, pipeline switch valve AV-8, and vent pipeline valve AV-11. After opening the chromatograph switch valve 1V-5, the sample gas can enter the chromatograph 4 for detection and analysis.

Claims

1. A chromatograph control cabinet, comprising a first cabinet body and a second cabinet body, characterized in that: The first cabinet and the second cabinet are arranged in parallel, the inner cavities of the first cabinet and the second cabinet are connected, the inner cavity of the first cabinet is embedded with a pretreatment device, the second cabinet is embedded with a chromatograph and a water analyzer, the side wall of the first cabinet is equipped with a carrier gas storage tank, the carrier gas storage tank, the pretreatment device, the chromatograph and the water analyzer are connected by connecting pipes, and the side wall of the second cabinet is fixedly equipped with an explosion-proof air conditioner.

2. The chromatograph control cabinet according to claim 1, characterized in that: The pre-processing device comprises a sample selection module and a carrier gas processing module, the sample selection module and the carrier gas processing module are respectively connected to the connecting end of the sample selection valve, and the sample selection valve is connected to the chromatograph through a connecting pipeline.

3. The chromatograph control cabinet according to claim 2, characterized in that: The sample selection module includes a standard gas intake assembly and an ultra-pure ammonia detection intake assembly. The standard gas intake assembly includes a pressure reducing valve YV-6. The input end of the pressure reducing valve YV-6 is connected to the carrier gas storage tank. The output end of the pressure reducing valve YV-6 is fixedly connected to automatic valves AV-5, AV-6, and AV-7 through connecting pipes. The automatic valves AV-5, AV-6, and AV-7 are respectively connected to the sample gas injection pipes STD1, STD2 and the spare pipe. The injection pipes STD1, STD2 and the spare pipe are connected to the connecting end of the sample selection valve.

4. The chromatograph control cabinet according to claim 3, characterized in that: The ultra-pure ammonia detection intake assembly includes a pressure reducing valve YV-7, which is respectively connected to automatic valves AV-1, AV-2, AV-3 and AV-4. The automatic valves AV-1, AV-2, AV-3 and AV-4 are respectively connected to intake pipes S10, S11, S12 and S13. The intake pipes S10, S11, S12 and S13 are connected to the sample selection valve.

5. The chromatograph control cabinet according to claim 2, characterized in that: The carrier gas processing module includes a purifier and a diluter, and is assembled in the connecting pipeline between the pressure reducing valve YV-1 and the sample selection valve.

6. The chromatograph control cabinet according to claim 1, characterized in that: The tops of the first cabinet and the second cabinet are fixedly equipped with lifting rings.

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