Improved cooling reflux sampler

Abstract

The utility model relates to an improved cooling reflux sampler which comprises a cooling cavity and a buffer reflux filtering cavity which are communicated up and down, a sample inlet is formed in the bottom of the buffer reflux filtering cavity, and a low-pressure steam inlet is formed in the outer wall of the buffer reflux filtering cavity; a vortex refrigerator is arranged in the cooling cavity, two pipelines are connected to the vortex refrigerator and extend out of the cooling cavity, and one pipeline extends out of the side wall of the cooling cavity, sequentially passes through a temperature control valve, a refrigerator pressure reducing valve, an instrument air inlet, a driving pressure reducing valve, an electromagnetic valve and an output valve and then is connected with a sample outlet; the other pipeline extends out of the top of the cooling cavity and is respectively connected with an output valve and a temperature controller; the temperature controller is respectively connected with a power switch and an electromagnetic valve; an electric heating insulation box is arranged on the outer wall of the cooling cavity, and the temperature controller, the refrigerator pressure reducing valve, the driving pressure reducing valve, the electromagnetic valve and the output valve are all arranged in the electric heating insulation box. The sampler is suitable for sampling in high-humidity and high-temperature pipelines containing heavy component gases such as tar and the like and in northern low-temperature environments.

Description

Technical Field

[0001] The present application relates to the technical field of sampling equipment, and in particular to an improved cooling reflux sampler. Background Art

[0002] When the currently commonly used pipeline gas sampler is used to take samples in high-humidity, high-temperature, tar-containing pipelines, the heavy component tar can easily cause pipeline blockage. At the same time, the high-temperature, high-humidity gas directly enters the analytical instrument without being treated, which will cause instrument sensor failure, and in the extremely low temperature environment in the north, it will affect the normal operation of the solenoid valve. Utility Model Content

[0003] In order to make the sampler suitable for sampling in pipelines with high humidity, high temperature, containing heavy gas components such as tar, and in low temperature environments in the north, the present application provides an improved cooling reflux sampler.

[0004] The improved cooling reflux sampler provided in this application adopts the following technical solution:

[0005] An improved cooling reflux sampler comprises a cooling cavity and a buffer reflux filter cavity which are connected up and down, a sample inlet is arranged at the bottom of the buffer reflux filter cavity, a filter layer is arranged in the buffer reflux filter cavity, and a low-pressure steam inlet is arranged on the outer wall of the buffer reflux filter cavity near the sample inlet;

[0006] The cooling cavity is provided with a vortex refrigerator, and the vortex refrigerator is connected to two pipelines extending to the outside of the cooling cavity, one of which is extended from the side wall of the cooling cavity and sequentially passes through the temperature control valve, the refrigerator pressure reducing valve, the instrument air inlet, the driving pressure reducing valve, the solenoid valve and the output valve to connect to the sample outlet, and the other pipeline is extended from the top of the cooling cavity and is respectively connected to the output valve and the temperature controller, and the temperature controller is respectively connected to the power switch and the solenoid valve;

[0007] An electric heating insulation box is arranged on the outer wall of the cooling cavity, and the temperature controller, refrigerator pressure reducing valve, drive pressure reducing valve, solenoid valve and output valve are all arranged in the electric heating insulation box.

[0008] Preferably, a mounting plate is fixedly connected to the outer wall of the cooling cavity, and the temperature control valve, instrument air inlet, sample outlet, power switch and electric heating insulation box are all fixed on the mounting plate.

[0009] Preferably, thermometers are provided on the outer walls of the cooling cavity and the buffer reflux filter cavity, wherein the thermometer on the cooling cavity is connected to the temperature control valve.

[0010] Preferably, a steam valve is provided on the low-pressure steam inlet.

[0011] Preferably, the cooling cavity and the buffer reflux filter cavity are both 304 stainless steel structure cavities.

[0012] Compared with the prior art, the improved cooling reflux sampler of the utility model has the following beneficial technical effects:

[0013] 1. The cold air generated by the cold end of the eddy current cooler exchanges heat with the high-temperature and high-humidity samples in the cooling chamber, so that the samples are cooled to the set temperature. When sampling in the low-temperature environment in the north, the thermostat, refrigerator pressure reducing valve, drive pressure reducing valve, solenoid valve and output valve are heated by the electric heating insulation box, so that the solenoid valve and other electrical equipment that are greatly affected by low temperature are always at a better working temperature to ensure normal operation.

[0014] 2. The condensed water and heavy fraction condensate generated after the sample is cooled can flow back to the process pipeline through the buffer reflux filter cavity under the action of gravity, and clean the filter layer at the front end of the buffer reflux filter cavity while flowing back, thus achieving a self-cleaning effect.

[0015] 3. The sample is separated into particles and tar through the front-end filter layer. In addition to reflux self-cleaning, it can also be cleaned by steam backwashing to simplify maintenance work.

[0016] 4. The temperature control valve is used to control the cooling range of the vortex refrigerator. Adjusting the control screw on the temperature control valve can control the air intake flow of the vortex refrigerator, thereby achieving the purpose of controlling the cooling temperature.

[0017] 5. By adjusting the temperature controller, the sample temperature at the outlet can be measured to achieve temperature control of the sample. When the sample temperature is higher than the set value, it can be automatically shut down. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the electric heating insulation box of the utility model in an open state;

[0019] Figure 2 It is a side view of the utility model;

[0020] Figure 3 The utility model is a sampling flow chart when used.

[0021] Figure numerals: 1. Cooling chamber; 2. Buffer reflux filter chamber; 3. Sample inlet; 4. Low-pressure steam inlet; 5. Thermometer; 6. Steam valve; 7. Vortex refrigerator; 8. Temperature control valve; 9. Refrigerator pressure reducing valve; 10. Instrument air inlet; 11. Drive pressure reducing valve; 12. Solenoid valve; 13. Output valve; 14. Sample outlet; 15. Temperature controller; 16. Power switch; 17. Electric heating insulation box; 18. Mounting plate. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme of the embodiment of the present application will be clearly and completely described in conjunction with the drawings of the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0023] Unless otherwise defined, the technical terms or scientific terms used herein shall have the common meanings understood by persons with ordinary skills in the field to which this application belongs. The words "one" or "an" and the like used in the patent application specification and claims of this application do not indicate a quantity limitation, but indicate the existence of at least one.

[0024] The following is combined with Figure 1-3 This application is described in further detail.

[0025] The embodiment of the present application discloses an improved cooling reflux sampler.

[0026] Reference Figure 1 and Figure 2 An improved cooling reflux sampler includes a cooling cavity 1 and a buffer reflux filter cavity 2 which are connected up and down. In this embodiment, the cooling cavity 1 and the buffer reflux filter cavity 2 are both structural cavities made of 304 stainless steel.

[0027] A sample inlet 3 is integrally formed at the bottom of the buffer reflux filter cavity 2, a filter layer is provided in the buffer reflux filter cavity 2, a low-pressure steam inlet 4 is installed on the outer wall of the buffer reflux filter cavity 2 near the sample inlet 3, a thermometer 5 is installed on the outer wall of the buffer reflux filter cavity 2 near the cooling cavity 1, and a steam valve 6 is installed on the low-temperature steam inlet.

[0028] A vortex refrigerator 7 is installed in the cooling chamber 1. Two pipelines are connected to the vortex refrigerator 7 and extend to the outside of the cooling chamber 1. One pipeline extends from the side wall of the cooling chamber 1 and passes through the temperature control valve 8, the refrigerator pressure reducing valve 9, the instrument air inlet 10, the drive pressure reducing valve 11, the solenoid valve 12 and the output valve 13 in sequence to connect to the sample outlet 14. The other pipeline extends from the top side wall of the cooling chamber 1 and is respectively connected to the output valve 13 and the temperature controller 15. The temperature controller 15 is respectively connected to the power switch 16 and the solenoid valve 12. In this embodiment, the connection of each electrical device and the valve body is all prior art and will not be described in detail.

[0029] Reference Figure 1 and Figure 2In order to ensure the normal operation of electrical equipment such as the solenoid valve 12 in the extremely low temperature environment in the north, an electric heating insulation box 17 is also installed on the outer wall of the cooling cavity 1. The thermostat 15, the refrigerator pressure reducing valve 9, the drive pressure reducing valve 11, the solenoid valve 12 and the output valve 13 are all installed in the electric heating insulation box 17. Then, the electric heating insulation box 17 can be used to ensure that the electrical equipment such as the solenoid valve 12 that is greatly affected by low temperature is always at a better working temperature to ensure normal operation.

[0030] For the fixed installation of each component, a mounting plate 18 is fixedly installed on the outer wall of the cooling chamber 1 , and the temperature control valve 8 , the instrument air inlet 10 , the sample outlet 14 , the power switch 16 and the electric heating insulation box 17 are all fixed on the mounting plate 18 .

[0031] Reference Figure 3 When the utility model is used, the sample inlet 3 of the buffer reflux filter chamber 2 is vertically installed on the sampling pipeline through the injection valve, the power switch 16 is connected to the mains, the instrument air inlet 10 is connected to the instrument air, the low-pressure steam inlet 4 is connected to the low-pressure steam, and the sample outlet 14 is connected to the subsequent instrument.

[0032] The high-temperature, high-humidity, heavy component-containing sample gas in the sampling pipeline enters the buffer reflux filter chamber 2 through the injection valve. After buffering and filtering by the filter layer in the chamber, the particulate matter and heavy component tar are separated, and the water vapor is condensed into condensed water by preliminary cooling. The condensed water and heavy component condensate flow back to the process pipeline under the action of gravity. The filter layer can also be cleaned while flowing back to achieve the purpose of self-cleaning. The separated sample gas enters the cooling chamber 1 for further cooling until it reaches the set temperature range. The cooling temperature is specifically controlled by the temperature control valve 8 and the vortex refrigerator 7. The sample gas after cooling and separation is provided to the subsequent instrument for analysis through the output valve 13. If the sample gas temperature is higher than the temperature set by the thermostat 15, the output valve 13 will automatically cut off the sample gas until the temperature drops to the set temperature and then open to ensure that the subsequent instrument will not be damaged by the high-temperature gas.

[0033] Among them, the steam valve 6 can be opened manually for manual cleaning of the buffer reflux filter chamber 2; and the temperature controller 15, the solenoid valve 12 and the driving pressure reducing valve 11 are used to control the operation of the output valve 13, and the pressure of the driving pressure reducing valve 11 is specifically controlled at 0.3MPa.

[0034] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An improved cooling reflux sampler, characterized in that: The invention comprises a cooling cavity (1) and a buffer reflux filter cavity (2) which are connected to each other from top to bottom, wherein a sample inlet (3) is arranged at the bottom of the buffer reflux filter cavity (2), a filter layer is arranged in the buffer reflux filter cavity (2), and a low-pressure steam inlet (4) is arranged on the outer wall of the buffer reflux filter cavity (2) near the sample inlet (3); The cooling cavity (1) is provided with a vortex refrigerator (7), and the vortex refrigerator (7) is connected to two pipelines extending to the outside of the cooling cavity (1), one of which extends from the side wall of the cooling cavity (1) and passes through a temperature control valve (8), a refrigerator pressure reducing valve (9), an instrument air inlet (10), a drive pressure reducing valve (11), a solenoid valve (12) and an output valve (13) in sequence, and then connects to a sample outlet (14), and the other pipeline extends from the top of the cooling cavity (1) and is respectively connected to the output valve (13) and a temperature controller (15), and the temperature controller (15) is respectively connected to a power switch (16) and a solenoid valve (12); An electric heating insulation box (17) is arranged on the outer wall of the cooling cavity (1), and the temperature controller (15), the refrigerator pressure reducing valve (9), the driving pressure reducing valve (11), the solenoid valve (12) and the output valve (13) are all arranged in the electric heating insulation box (17).

2. An improved cooling reflux sampler according to claim 1, characterized in that: A mounting plate (18) is fixedly connected to the outer wall of the cooling cavity (1), and the temperature control valve (8), instrument air inlet (10), sample outlet (14), power switch (16) and electric heating insulation box (17) are all fixed on the mounting plate (18).

3. An improved cooling reflux sampler according to claim 1, characterized in that: The outer walls of the cooling cavity (1) and the buffer reflux filter cavity (2) are both provided with thermometers (5), wherein the thermometer (5) on the cooling cavity (1) is connected to the temperature control valve (8).

4. The improved cooling reflux sampler according to claim 1, characterized in that: The low-pressure steam inlet (4) is provided with a steam valve (6).

5. The improved cooling reflux sampler according to claim 1, characterized in that: The cooling cavity (1) and the buffer reflux filter cavity (2) are both 304 stainless steel structural cavities.

Images