CN202494591U - Converter gas manual sampling device - Google Patents

Abstract

The utility model discloses a converter gas manual sampling device, which comprises a dust content sampling unit, a water content sampling unit and a vacuum pump connected in series, the dust content sampling unit and a gas introduction pipe capable of introducing gas to be measured from a source to be measured connection, the two ends of the water content sampling unit are respectively connected with the dust content sampling unit and the vacuum pump, the vacuum pump is connected with the gas return pipe capable of returning the gas to the source to be measured, the inlet end of the gas introduction pipe is connected with the gas A valve is arranged at the outlet end of the return pipe, and a spring pressure regulating valve is also arranged on the gas inlet pipe, and the spring pressure regulating valve is located behind the valve at the inlet end of the gas inlet pipe. The utility model solves the problem that the converter gas cannot be manually sampled due to too high CO content, can monitor the quality of the converter gas through manual analysis, and has no harm to the health and safety of the sampling personnel, and improves the safety of the sampling operation. Safety, less environmental pollution.

Description

Converter Gas Manual Sampling Device

technical field

The utility model relates to a gas sampling device, in particular to an artificial sampling device for converter gas which can avoid the diffusion of gas during sampling.

Background technique

The dust content of converter gas is an important parameter to measure the quality of converter gas, and it is also an important indicator to ensure the safe operation of converter gas system, especially the rotating equipment. The sampling device introduced in "Measurement Method of Impurity Content", when using this sampling device, the converter gas needs to be released during the sampling process, and no open flames can exist in the gas area, so the method of non-combustion and release of converter gas must be used to ensure the sampling operation went smoothly. Since the CO content in the converter gas is as high as 70%, the CO content in the converter gas release point and its downwind direction seriously exceeds the standard or even reaches 200PPm, far exceeding the national standard of 30PPm, seriously endangering the health of the sampling personnel.

Utility model content

In view of the deficiencies in the prior art, the purpose of this utility model is to provide a converter gas manual sampling device, which can fundamentally eliminate the release of converter gas during sampling, and greatly guarantee the safety and health of sampling personnel.

In order to achieve the above object, the utility model provides a converter gas manual sampling device, the converter gas manual sampling device includes a dust content sampling unit, a water content sampling unit and a vacuum pump connected in series, wherein the dust content sampling unit and The gas inlet pipe capable of introducing the gas to be measured from the source to be measured is connected, and the two ends of the water content sampling unit are respectively connected to the dust content sampling unit and a vacuum pump, and the vacuum pump is connected to a gas return pipe capable of returning the gas to the source to be measured The inlet end of the gas inlet pipe and the outlet end of the gas return pipe are respectively provided with a valve, and a spring pressure regulating valve is also arranged on the gas inlet pipe, and the spring pressure regulating valve is located in the gas inlet pipe. after the inlet port valve.

According to the manual sampling device for converter gas described in the utility model, the manual sampling device for converter gas further includes a first three-way valve and a first gas discharge pipe, and the first three-way valve is arranged on the gas inlet pipe and located at After the inlet valve of the gas introduction pipe; one end of the first gas discharge pipe is connected to the gas introduction pipe through a first three-way valve, and the other end of the first gas discharge pipe communicates with the atmosphere.

According to the converter gas manual sampling device described in the present utility model, the first three-way valve is replaced by being arranged on the gas inlet pipe between the position of the first three-way valve and the dust content sampling unit and on the Two valves on the first gas discharge pipe.

According to the manual sampling device for converter gas described in the utility model, the manual sampling device for converter gas further includes a second three-way valve and a second gas discharge pipe, and the second three-way valve is arranged on the gas inlet pipe and located at the Between the first three-way valve and the dust sampling unit; one end of the second gas discharge pipe is connected to the gas introduction pipe through the second three-way valve, and the other end of the second gas discharge pipe is connected to the first gas discharge pipe. The discharge pipe is connected.

According to the converter gas manual sampling device of the present invention, the second three-way valve is replaced by a valve arranged on the second gas discharge pipe.

According to the converter gas manual sampling device described in the present invention, the converter gas manual sampling device also includes a pressure gauge arranged sequentially after the spring pressure regulating valve, and a gas flow rate device arranged between the water content sampling unit and the vacuum pump. meter and a thermometer set on the gas flow meter. .

According to the converter gas manual sampling device described in the utility model, the dust content sampling unit includes a sampler and a glass fiber filter membrane placed in the sampler, and the moisture content sampling unit includes a U-shaped tube or a spherical drying device and the sampling packing placed in the U-shaped tube or spherical desiccator.

According to the converter gas manual sampling device described in the present invention, the sampling filler is dry color-changing silica gel, solid calcium chloride or anhydrous copper sulfate.

According to the converter gas manual sampling device described in the utility model, the dust content sampling unit and the water content sampling unit are arranged in the converter gas manual sampling device through a detachable unit, and the detachable unit is set at the dust content The sampling unit or the two ends of the water content sampling unit, and the detachable unit includes a detachable connection piece and a detachable flow blocking piece.

According to the manual sampling device for converter gas described in the utility model, the detachable connecting piece is an elastic hose, the detachable flow blocking piece is a spring clip, and the spring clip is detachably fixed on the elastic hose .

Compared with the prior art, the utility model solves the problem that the converter gas cannot be manually sampled due to too high CO content, and can monitor the quality of the converter gas through manual analysis, and has no impact on the health and safety of the sampling personnel. Harm, improve the safety of sampling operations, less environmental pollution.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of a converter gas manual sampling device of the present invention.

Fig. 2 is a structural schematic diagram of another embodiment of the converter gas manual sampling device of the present invention.

Fig. 3 is a structural schematic diagram of another embodiment of the converter gas manual sampling device of the present invention.

Fig. 4 is a structural schematic diagram of another embodiment of the converter gas manual sampling device of the present invention.

Fig. 5 is a structural schematic diagram of another embodiment of the converter gas manual sampling device of the present invention.

Fig. 6 is a structural schematic diagram of another embodiment of the converter gas manual sampling device of the present invention.

Explanation of main reference signs:

1-The inlet valve of the gas inlet pipe, 2-the first three-way valve, 3-spring pressure regulating valve, 4-pressure gauge, 5-detachable flow resistance, 6-sampler, 7-detachable connector, 8-U-shaped pipe, 10-thermometer, 11-gas flow meter, 12-vacuum pump, 14-the outlet valve of the gas return pipe, 15-the second three-way valve, 16-the second gas discharge pipe, 17-sample filling Object, 19-first gas discharge pipe, 20-gas return pipe, 21-source to be tested, 22-gas introduction pipe, 9, 13, 18, 23, 24, 25-valve.

Detailed ways

The specific embodiment of the utility model will now be described in detail with reference to the accompanying drawings, so that those skilled in the art to which the utility model belongs can easily implement the utility model.

Fig. 1 to Fig. 6 are structural schematic diagrams of various embodiments of the converter gas manual sampling device of the present invention. Specifically, the converter gas manual sampling device of the present utility model includes a dust content sampling unit, a water content sampling unit and a vacuum pump 12 connected in series, the dust content sampling unit and the gas inlet pipe that can import the gas to be measured from the source 21 to be measured 22 connection, the two ends of the water content sampling unit are respectively connected with the dust content sampling unit and the vacuum pump 12, the vacuum pump 12 is connected with the gas return pipe 20 that can return the gas to the source 21 to be measured, the inlet end of the gas introduction pipe 22 A valve is respectively provided with the outlet end of the gas return pipe 20, and a spring pressure regulating valve 3 is also provided on the gas introduction pipe 22, and the spring pressure regulating valve 3 is positioned after the inlet port valve 2 of the gas introduction pipe.

The utility model sets the dust content sampling unit and the water content sampling unit in series, which can obtain the dust content and water content of the converter gas at the same time in one sampling, which not only improves the efficiency of sampling operation, but also facilitates the miniaturization of equipment and low cost. If the dust content sampling unit and the water content sampling unit are arranged in parallel, two sets of systems for returning the gas to the source to be measured are required, which increases the cost; in addition, the national standard requires that the distance between the sampling pipe and the part with a sharp change in cross-sectional shape is at least 1.5 times the diameter of the pipe, if two sampling units are installed in parallel, the distance between the two sampling pipes is at least 3 times the diameter of the pipe, which increases the volume of the device, which is not advisable.

Hereinafter, firstly, each component of the converter gas manual sampling device of the present invention will be described in detail.

Wherein, the dust content sampling unit comprises a sampler 6 and a glass fiber filter membrane (not shown) placed in the sampler 6, the glass fiber filter membrane is used as the main filter component, and the sampler 6 is used in conjunction with it. The sampling unit is set according to the national standard. Before sampling, dry the glass fiber filter membrane and weigh it; after sampling, take out the glass fiber filter membrane with dust, dry it and weigh it, and compare the weight of the glass fiber filter membrane before and after to get the converter gas The dust weight of the unit converter gas can be obtained by dividing the dust weight by the gas flow rate.

The water content sampling unit specifically includes a U-shaped tube 8 or a spherical drier and a sampling filling 17 placed in the U-shaped tube 8 or a spherical drier. The sampling filling 17 can absorb moisture and can specifically be color-changing silica gel, solid calcium chloride Or anhydrous copper sulfate and other substances. Before sampling, dry and weigh the U-shaped tube 8 or the spherical dryer and the sampling filler 17; after sampling, weigh the U-shaped tube 8 or the spherical dryer and the sampling filler 17 after absorbing water, and compare the U-shaped tube 8 Or the weight before and after the spherical drier and the sampling filler 17 can get the moisture content in the converter gas, and then divide the moisture content by the gas flow to get the unit converter gas moisture content. Among them, according to the requirements of the national standard, the temperature, pressure and atmospheric pressure of the gas sample need to be measured when sampling, and the gas flow measured by the flowmeter is converted into a standard state by using the above data, and then the dust content of the gas under the standard volume is calculated and moisture content.

Therefore, the converter gas manual sampling device also includes a pressure gauge 4 arranged behind the spring pressure regulating valve 3, wherein the spring pressure regulating valve 3 is used to adjust the pressure in the pipeline of the sampling device to prevent pressure fluctuations from causing adverse effects on the sampling unit The pressure gauge 4 is used to visually display and read the pressure value in the pipeline of the sampling device. Preferably, the pressure gauge 4 is a bellows pressure gauge, which can accurately reflect the pressure change in the pipeline. The converter gas manual sampling device also includes a gas flow meter 11 arranged between the water content sampling unit and the vacuum pump 12, and the gas flow meter 11 is used for visually displaying and reading the gas flow value in the pipeline. Preferably, a valve 9 can be provided before the gas flow meter 11, and the valve 9 can be used to control or coordinately control the flow in the pipeline of the sampling device, which can be a common valve such as a manual valve. Preferably, the gas flow meter 11 is a wet gas flow meter. In addition, a thermometer 10 is provided on the gas flow meter 11, and the thermometer 10 is used to measure and read the temperature of the gas.

Specifically, in order to facilitate the removal of the above-mentioned dust content sampling unit and water content sampling unit for subsequent processing and analysis, and to prevent the gas from entering before and after the sampling operation in time, the dust content sampling unit and water content sampling unit are detachable The unit is set in the manual sampling device for converter gas, and the detachable unit can be specifically set at both ends of the dust content sampling unit or the water content sampling unit. The connecting piece 7 is used to connect the left and right pipelines or components, and the detachable blocking piece 5 is used to block the passage of gas entering the sampling unit. Specifically, the detachable connecting piece 7 is an elastic hose, and the detachable choke piece 5 is a spring clip, and the spring clip is detachably fixed on the elastic hose 7 to block gas, but is not limited thereto. Preferably, the elastic hose is a rubber hose.

The vacuum pump 12 installed behind the sampling unit is used as a power source to provide power for the gas to return to the source 21 to be measured after passing through the sampling device, so as to prevent the gas from being released during the sampling process. Those skilled in the art should know that the gas inlet pipe 22 of the sampling device should be connected with the upstream end of the source 21 to be tested, and the gas return pipe 20 of the sampling device should be connected with the downstream end of the source 21 to be tested, which can ensure the Gas detection accuracy.

The specific implementation of the converter gas manual sampling device also includes a plurality of valves for controlling the direction of the gas during the sampling operation, and the specific setting method will be described in detail below. Among them, the inlet valve 1 of the gas inlet pipe and the outlet valve 14 of the gas return pipe are the portal valves of the sampling device, which can prevent the inflow or outflow of gas during non-sampling operations, and can also ensure the operability of the sampling operation. The valves used in the converter gas artificial sampling device can be manual valves or other types of valves.

The specific structures of various embodiments of the converter gas artificial sampling device of the present utility model will be introduced in detail below.

As shown in Figure 1, according to an embodiment of the utility model, the converter gas manual sampling device also includes a first three-way valve 2 and a first gas discharge pipe 19, and the first three-way valve 2 is arranged on the gas inlet pipe 22 And after the inlet valve 1 of the gas inlet pipe, one end of the first gas discharge pipe 19 is connected with the gas inlet pipe 22 through the first three-way valve 2, and the other end of the first gas discharge pipe 19 communicates with the atmosphere. The first three-way valve 2 can be the structure of a common T-type three-way valve, and the first three-way valve 2 can form a passage between the gas inlet pipe 22 and the first gas discharge pipe 19, that is, when the spool is at the bottom, Then the left and right pipelines are connected, and the sampling operation of the gas to be measured can be started, and the gas is returned to the source to be measured by the action of the vacuum pump 12; To discharge the residual gas and moisture in the gas inlet pipe 22 to ensure the quality of the test.

Preferably, the converter gas artificial sampling device also includes a valve 13 respectively arranged on the gas return pipe 20 and a valve 18 arranged on the first gas discharge pipe 19 to realize the control of gas return and gas discharge, and the above valves can be It is an ordinary manual valve, but not limited to it.

As shown in Figure 2, according to another embodiment of the present utility model, the first three-way valve 2 in the above-mentioned converter gas manual sampling device can be replaced with a place where the first three-way valve 2 is located and the dust-containing The valve 24 on the gas introduction pipe 22 between the sampling units and the valve 23 arranged on the first gas discharge pipe 19. Because the valves 24 and 23 can play the same control and drainage role as the first three-way valve 2, the first gas discharge pipe 19 can also discharge the residual gas and moisture in the gas introduction pipe 22 before and after the sampling operation, that is, when When closing valve 24 and opening valve 1, 23, 18, residual gas and moisture can be discharged through the first gas discharge pipe 19; when closing valve 23, 18 and opening valve 1, 2, 9, 13, 14, the gas to be measured It can enter the sampling unit through the gas inlet pipe 22 and return to the source 21 to be tested.

As shown in Figure 3 and Figure 4, according to the other two implementations of the utility model, the converter gas manual sampling device also includes a second three-way valve 15 and a second gas discharge pipe 16, and the second three-way valve 15 is arranged on the gas On the introduction pipe 22 and between the first three-way valve 2 and the dust content sampling unit, one end of the second gas discharge pipe 16 is connected with the gas introduction pipe 22 through the second three-way valve 15, the second gas discharge pipe 16 The other end communicates with the first gas discharge pipe 19 . The structure of the second three-way valve 15 is the same as that of the first three-way valve 2, and the second three-way valve 15 can form a passage between the gas inlet pipe 22 and the second gas discharge pipe 16, and the second gas discharge pipe 16 is used for After the sampling operation is completed, the residual gas in the sampling device pipeline is discharged. The first gas discharge pipe 19 cooperates with the second gas discharge pipe 16 to help efficiently and quickly discharge gas and moisture in the sampling device that may affect the sampling process. Taking the embodiment shown in Figure 3 as an example, during specific operation, when the spool of the first three-way valve 2 is located on the right, it connects to the lower left pipeline. Before discharging the residual gas and moisture in the gas inlet pipe 22; then place the spools of the first three-way valve 2 and the second three-way valve 15 at the bottom, then connect the left and right pipelines, and at this time open the valves 1, 9, 13, 14, the gas to be tested can enter the sampling unit through the gas inlet pipe 22 and return to the source 21 to be tested; after the sampling operation is completed, close the valves 1, 9, 13, 14, open the valve 18 and turn the second three-way valve 15 The spool is placed on the right, and the residual gas in the sampling device after the sampling operation is finished is discharged through the second gas discharge pipe 16 and the first gas discharge pipe 19. The operation mode of the embodiment shown in FIG. 4 is similar, and will not be repeated here.

As shown in Figures 5 and 6, according to another embodiment of the present utility model, the second three-way valve 15 in the above-mentioned converter gas manual sampling device can be replaced with a valve 25 arranged on the second three-way valve 15, Because the valve 25 can play a similar control and drainage role as the second three-way valve 15, the second gas discharge pipe 16 can also discharge the residual gas in the sampling device pipeline after the sampling operation is completed. Specifically, the operation manner of the embodiment shown in FIG. 6 will be described in detail below, and the operation manner of the embodiment shown in FIG. 5 is similar and will not be repeated here.

The structures of the above-mentioned manual sampling devices for converter gas are all exemplary, and are intended to illustrate that any structure that controls the gas sampling device through gas discharge pipes, valves and other components falls within the scope of protection of the present invention.

The working mode will be described below in conjunction with the manual sampling device for converter gas shown in FIG. 6 of the present utility model.

Before starting the sampling operation, confirm that the converter gas manual sampling device is installed according to Figure 6, close all valves, and confirm that the entire device has no leakage.

When the sampling operation starts, first open the valves marked 1, 23, and 18 in Fig. 6, and release the gas through the first gas discharge pipe 19 to discharge residual gas and moisture in the sampling device, and close after 2 minutes. Then, open the valves marked 1, 24, 9, 13, 14 in Fig. 6, remove the spring clips on all detachable units, and turn on the wet gas flow meter 11 and the vacuum pump 12, and adjust the opening of the valve 1 at the same time. The flow rate is controlled at 3.5-4L/min, and the spring pressure regulating valve 3 is adjusted to keep the pressure in the pipeline of the sampling device at 2.0Kpa. Afterwards, start to carry out the sampling operation of dust content and water content to the converter gas, the gas to be tested enters the sampling device through the gas inlet pipe 22, and passes through components such as the dust content sampling unit and the water content sampling unit, and the gas is sampled in the Under the action of the vacuum pump 12, the gas is sent back to the source 20 to be measured through the gas return pipe 20 .

After the sampling operation is finished, firstly close the valves marked 1, 24, 9, 13, 14 in Fig. 6, and clip the spring clips on all the detachable connection units. Then, open the valves with reference numerals 25, 18 among Fig. 6 to release the residual gas in the sampling device, and when the pressure of pressure gauge 4 shows 0, close the valves with reference numerals 25, 18 among Fig. 6 valve. Afterwards, take off the detachable connector 7, open the sampler 6 to take out the glass fiber filter membrane after sampling, weigh it after drying, and weigh the U-shaped tube 8 that includes the color-changing silica gel 17 after sampling, and then according to the previous weighing The weight of the glass fiber filter membrane taken, the weight of the U-shaped tube including the color-changing silica gel, and the read flow value and temperature value are calculated to obtain the dust content and water content of the unit converter gas.

In summary, the manual sampling device for converter gas of the present utility model improves the efficiency of sampling operations by connecting the dust content sampling unit and the water content sampling unit in series; by providing return power for the converter gas, the converted converter gas after sampling Returning to the gas pipeline, avoiding the gas release during the sampling process, improving the safety of manual sampling and reducing air pollution.

Although the converter gas artificial sampling device of the present invention has been specifically described with reference to the exemplary embodiment of the present invention, those skilled in the art should know that, without departing from the spirit and scope of the present invention, the implementation Examples of various forms of change.

Claims (10)

1. coal gas of converter hand sampling device; It is characterized in that; Said coal gas of converter hand sampling device comprises dustiness sampling unit, water cut sampling unit and the vacuum pump that is connected in series; Wherein, the dustiness sampling unit is connected with the coal gas ingress pipe that can import coal gas to be measured from source to be measured, and the two ends of water cut sampling unit are connected with vacuum pump with the dustiness sampling unit respectively; Vacuum pump with can the coal gas recurrent canal that coal gas is back to said source to be measured be connected; The endpiece of the inlet end of said coal gas ingress pipe and said coal gas recurrent canal respectively is provided with a valve, also is provided with the spring pressure regulator valve on the said coal gas ingress pipe, and said spring pressure regulator valve is positioned at after the inlet end valve of said coal gas ingress pipe.

2. coal gas of converter hand sampling device according to claim 1 is characterized in that, said coal gas of converter hand sampling device also comprises first T-valve and the first coal gas delivery pipe, wherein,

Said first T-valve is arranged on the coal gas ingress pipe, and is positioned at after the inlet end valve of said coal gas ingress pipe;

One end of the said first coal gas delivery pipe is connected the other end of the said first coal gas delivery pipe and atmosphere through first T-valve with the coal gas ingress pipe.

3. coal gas of converter hand sampling device according to claim 2; It is characterized in that, said first T-valve is replaced be set in place on the coal gas ingress pipe between the first T-valve present position and the dustiness sampling unit and be arranged on two valves on the first coal gas delivery pipe.

4. according to claim 2 or 3 described coal gas of converter hand sampling devices, it is characterized in that said coal gas of converter hand sampling device also comprises second T-valve and the second coal gas delivery pipe, wherein,

Said second T-valve is arranged on the coal gas ingress pipe and between said first T-valve and dustiness sampling unit;

One end of the said second coal gas delivery pipe is connected with the coal gas ingress pipe through second T-valve, and the other end of the said second coal gas delivery pipe is communicated with the first coal gas delivery pipe.

5. coal gas of converter hand sampling device according to claim 4 is characterized in that, said second T-valve is replaced with a valve that is arranged on the second coal gas delivery pipe.

6. coal gas of converter hand sampling device according to claim 1; It is characterized in that said coal gas of converter hand sampling device also comprises the tensimeter that is set in sequence in after the said spring pressure regulator valve, is arranged on the gas meter between water cut sampling unit and the vacuum pump and is arranged on the thermometer on the said gas meter.

7. coal gas of converter hand sampling device according to claim 1; It is characterized in that; Said dustiness sampling unit comprises ST and the glass fiber filter that places in the said ST, and said water cut sampling unit comprises U type pipe or spherical exsiccator and the sampling filling material that places said U type pipe or spherical exsiccator.

8. coal gas of converter hand sampling device according to claim 7 is characterized in that, said sampling filling material is dry discolour silica gel, solid calcium chloride or anhydrous cupric sulfate.

9. according to each described coal gas of converter hand sampling device in the claim 5 to 7; It is characterized in that; Said dustiness sampling unit and water cut sampling unit are arranged in the said coal gas of converter hand sampling device through detachable unit; Said detachable unit is arranged on the two ends of dustiness sampling unit or water cut sampling unit, and said detachable unit comprises removable connector and detachable choked flow piece.

10. coal gas of converter hand sampling device according to claim 9 is characterized in that said removable connector is an elastic hose, and said removable connector is a Spring Card, and said Spring Card removably is fixed on the said elastic hose.

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