Pretreatment device of natural gas water hydrocarbon dew-point instrument

Abstract

The utility model provides a pretreatment device of a natural gas water hydrocarbon dew-point instrument, which comprises a dust removal filter, a three-way valve, a water removal filter, a hydrocarbon removal filter, a first ball valve and a second ball valve, the three-way valve is respectively connected with the water removal filter and the hydrocarbon removal filter through pipelines, and the water removal filter, the hydrocarbon removal filter and the first ball valve are respectively connected with the second ball valve through pipelines.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas water hydrocarbon dew point detection equipment, in particular to a natural gas water hydrocarbon dew point instrument pre-processing device. Background Art

[0002] The natural gas water and hydrocarbon dew point meter is an important instrument used to detect the content of water and hydrocarbon compounds in natural gas. Its main purpose is to ensure the stability of the quality of natural gas extracted from underground during pipeline transmission. After being extracted from underground, natural gas is often rich in water vapor and hydrocarbon compounds. If these substances are not treated, they may corrode the pipeline or condense into ice in the pipeline, thereby affecting the transmission efficiency and safety of natural gas.

[0003] The working principle of the natural gas water and hydrocarbon dew point meter is usually based on measuring the dew point temperature of the gas. The dew point temperature refers to the temperature at which the water or hydrocarbon compounds in the gas begin to condense into liquid. By measuring this temperature, the content of water and hydrocarbon compounds in the gas can be inferred.

[0004] For the multi-gas source mixed transmission system, different gas sources have different water contents, which affects the quality control and safe operation of natural gas. If the on-site natural gas water and hydrocarbon dew point measurements are inaccurate, there is a risk of ice blockage and equipment damage.

[0005] The currently used natural gas water and hydrocarbon dew point meters usually use the cold mirror method to measure water dew point and hydrocarbon dew point. However, whether it is the cold mirror visual method or the cold mirror automatic detection method, the values ​​of water dew point and hydrocarbon dew point will be affected by free water, hydrocarbon condensate or operation steps in the natural gas, resulting in inaccurate measurement results. The current treatment method requires the test personnel to have rich observation experience and strictly control the cooling speed, which cannot completely solve the fundamental problem.

[0006] The existing technical shortcomings are: first, it relies too much on the experience of the measurer and cannot be quantified. If the measurement personnel are replaced, it will cause large deviations in the measurement results; second, when the dew points of water and hydrocarbons in natural gas are close, it cannot be effectively distinguished, resulting in inaccurate measurement results. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a natural gas water hydrocarbon dew point meter pre-treatment device in view of the deficiencies of the prior art.

[0008] The utility model provides a technical solution to the above technical problems as follows: a natural gas water hydrocarbon dew point meter pretreatment device, comprising: a dust removal filter, a three-way valve, a water removal filter, a hydrocarbon removal filter, a first ball valve, and a second ball valve. The dust removal filter is connected to the three-way valve and the first ball valve through pipelines, respectively; the three-way valve is connected to the water removal filter and the hydrocarbon removal filter through pipelines, respectively; the water removal filter, the hydrocarbon removal filter, and the first ball valve are connected to the second ball valve through pipelines, respectively.

[0009] The beneficial effect of the technical solution of the utility model is that after the measured natural gas passes through the sampling port and the dust removal filter to remove solid impurities, three different pipelines of dehydrogenation, dehydration and direct sampling can be selected respectively through the three-way valve and the first ball valve according to the measurement requirements, and the outlet pipeline of the device is connected to the water hydrocarbon dew point meter, so as to obtain the water dew point and hydrocarbon dew point values ​​after removing the influencing factors and the comparative measurement results without dehydration and dehydrogenation. A dust removal filter is installed, and it can meet the three sampling treatment methods of direct natural gas sampling, dehydrogenation and dehydration, effectively eliminating the influence of free water and hydrocarbon condensate on the measurement results during the measurement of water dew point and hydrocarbon dew point, thereby greatly improving the accuracy of water and hydrocarbon dew point measurement results. The structure is simple, easy to operate and portable. The three-way valve and the first ball valve are installed in parallel, and the three-way valve mainly involves the switching of the water removal and hydrocarbon removal pipelines. The problem of inaccurate measurement results due to free water and hydrocarbon condensate in the natural gas itself, insufficient experience of the measurer or improper operation methods in the measurement of water dew point and hydrocarbon dew point of natural gas is solved.

[0010] Furthermore, one end of the dust removal filter is connected to a sampling port via a pipeline.

[0011] The beneficial effect of adopting the above further technical solution is that it is convenient to transport the measured natural gas to the dust removal filter through the sampling port.

[0012] Furthermore, the other end of the dust removal filter is connected to the first end of the three-way valve and one end of the first ball valve through pipelines, the second end of the three-way valve is connected to one end of the water removal filter through a pipeline, the third end of the three-way valve is connected to one end of the hydrocarbon removal filter through a pipeline, and the other end of the water removal filter, the other end of the hydrocarbon removal filter and the other end of the first ball valve are respectively connected to one end of the second ball valve through pipelines.

[0013] The beneficial effect of adopting the above further technical solution is that the specific connection relationship design of each component facilitates the installation and maintenance of the natural gas water hydrocarbon dew point meter pretreatment device.

[0014] Furthermore, the other end of the second ball valve is connected to an inlet of a water hydrocarbon dew point meter through a pipeline.

[0015] The beneficial effect of adopting the above further technical solution is that it is convenient to connect the pre-treatment device of the water hydrocarbon dew point meter and to measure the water hydrocarbon dew point of natural gas.

[0016] Furthermore, a first one-way valve is provided on the pipeline between the water removal filter and the second ball valve.

[0017] The beneficial effects of adopting the above further technical solution are: the first one-way valve is used to prevent gas backflow, and the stability and reliability of the natural gas water hydrocarbon dew point meter pretreatment device are improved.

[0018] Furthermore, a second one-way valve is provided on the pipeline between the hydrocarbon removal filter and the second ball valve.

[0019] The beneficial effects of adopting the above further technical solution are: the second one-way valve is used to prevent gas backflow, and the stability and reliability of the natural gas water hydrocarbon dew point meter pretreatment device are improved.

[0020] Furthermore, the water removal filter, the hydrocarbon removal filter and the first ball valve are respectively connected to a third ball valve through pipelines.

[0021] The beneficial effect of adopting the above further technical solution is that the provision of the third ball valve facilitates other processing and function expansion.

[0022] Furthermore, the third ball valve is connected to a next-stage processing pipeline via a pipeline.

[0023] The beneficial effect of adopting the above further technical solution is that a pipeline is reserved at the outlet for the possible next-level treatment. A reserved pipeline is reserved at the outlet of the device, and the next-level treatment can be continued.

[0024] Furthermore, the next-stage processing pipeline is connected to a natural gas analysis sampling port.

[0025] The beneficial effect of adopting the above further technical solution is that a pipeline is reserved at the outlet for possible next-level processing, which is convenient for natural gas analysis and sampling.

[0026] Furthermore, the dust removal filter is a mechanical impurity filter.

[0027] The beneficial effect of adopting the above further technical solution is: a mechanical impurity filter is installed at the sampling inlet to remove solid impurities in the natural gas.

[0028] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1A schematic structural diagram of a natural gas water hydrocarbon dew point meter pretreatment device provided in an embodiment of the utility model.

[0030] Explanation of the accompanying numbers: 1. Dust removal filter; 2. Three-way valve; 3. Water removal filter; 4. Hydrocarbon removal filter; 5. First ball valve; 6. Second ball valve; 7. Sampling port; 8. Water hydrocarbon dew point meter inlet; 9. First one-way valve; 10. Second one-way valve; 11. Third ball valve; 12. Next-level processing pipeline. DETAILED DESCRIPTION

[0031] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0032] like Figure 1 As shown, an embodiment of the utility model provides a natural gas water hydrocarbon dew point meter pretreatment device, including: a dust removal filter 1, a three-way valve 2, a water removal filter 3, a hydrocarbon removal filter 4, a first ball valve 5, and a second ball valve 6. The dust removal filter 1 is connected to the three-way valve 2 and the first ball valve 5 through pipelines, respectively, the three-way valve 2 is connected to the water removal filter 1 and the hydrocarbon removal filter 4 through pipelines, respectively, the water removal filter 3, the hydrocarbon removal filter 4 and the first ball valve 5 are connected to the second ball valve 6 through pipelines, respectively.

[0033] The beneficial effect of the technical solution of the utility model is that after the measured natural gas passes through the sampling port and the dust removal filter to remove solid impurities, three different pipelines of dehydrogenation, dehydration and direct sampling can be selected respectively through the three-way valve and the first ball valve according to the measurement requirements, and the outlet pipeline of the device is connected to the water hydrocarbon dew point meter, so as to obtain the water dew point and hydrocarbon dew point values ​​after removing the influencing factors and the comparative measurement results without dehydration and dehydrogenation. A dust removal filter is installed, and it can meet the three sampling treatment methods of direct natural gas sampling, dehydrogenation and dehydration, effectively eliminating the influence of free water and hydrocarbon condensate on the measurement results during the measurement of water dew point and hydrocarbon dew point, thereby greatly improving the accuracy of water and hydrocarbon dew point measurement results. The structure is simple, easy to operate and portable. The three-way valve and the first ball valve are installed in parallel, and the three-way valve mainly involves the switching of the water removal and hydrocarbon removal pipelines. The problem of inaccurate measurement results due to free water and hydrocarbon condensate in the natural gas itself, insufficient experience of the measurer or improper operation methods in the measurement of water dew point and hydrocarbon dew point of natural gas is solved.

[0034] The embodiment of the utility model provides a natural gas water hydrocarbon dew point meter pretreatment device, which is used to solve the problem of inaccurate measurement results due to the natural gas itself containing free water, hydrocarbon condensate, insufficient experience of the measurer or improper operation method during the measurement of natural gas water dew point and hydrocarbon dew point. The device (natural gas water hydrocarbon dew point meter pretreatment device) is equipped with a mechanical impurity filter (dust removal filter 1), and can meet the three sampling processing methods of natural gas direct sampling, dehydrogenation (hydrocarbon removal filter), and dehydration (water removal filter), which can greatly improve the accuracy of the measurement results.

[0035] It replaces the traditional method of over-reliance on the experience of measurement personnel, and effectively eliminates the influence of free water and hydrocarbon condensate on the measurement results during the measurement of water dew point and hydrocarbon dew point, thereby greatly improving the accuracy of water and hydrocarbon dew point measurement results. It has a simple structure, convenient operation, good portability, and can be widely used in the measurement of natural gas water and hydrocarbon dew point.

[0036] like Figure 1 As shown, further, one end of the dust removal filter 1 is connected to a sampling port 7 through a pipeline.

[0037] The beneficial effect of adopting the above further technical solution is that it is convenient to transport the measured natural gas to the dust removal filter through the sampling port.

[0038] like Figure 1 As shown, further, the other end of the dust removal filter 1 is connected to the first end of the three-way valve 2 and one end of the first ball valve 5 through pipelines, respectively, the second end of the three-way valve 2 is connected to one end of the water removal filter 3 through a pipeline, the third end of the three-way valve 2 is connected to one end of the hydrocarbon removal filter 4 through a pipeline, and the other end of the water removal filter 3, the other end of the hydrocarbon removal filter 4 and the other end of the first ball valve 5 are respectively connected to one end of the second ball valve 6 through pipelines.

[0039] The beneficial effect of adopting the above further technical solution is that the specific connection relationship design of each component facilitates the installation and maintenance of the natural gas water hydrocarbon dew point meter pretreatment device.

[0040] like Figure 1 As shown, further, the other end of the second ball valve 6 is connected to a water hydrocarbon dew point meter inlet 8 through a pipeline.

[0041] The beneficial effect of adopting the above further technical solution is that it is convenient to connect the pre-treatment device of the water hydrocarbon dew point meter and to measure the water hydrocarbon dew point of natural gas.

[0042] like Figure 1 As shown, further, a first one-way valve 9 is provided on the pipeline between the water removal filter 3 and the second ball valve 6 .

[0043] The beneficial effects of adopting the above further technical solution are: the first one-way valve is used to prevent gas backflow, and the stability and reliability of the natural gas water hydrocarbon dew point meter pretreatment device are improved.

[0044] like Figure 1 As shown, further, a second one-way valve 10 is provided on the pipeline between the hydrocarbon removal filter 4 and the second ball valve 6 .

[0045] The beneficial effects of adopting the above further technical solution are: the second one-way valve is used to prevent gas backflow, and the stability and reliability of the natural gas water hydrocarbon dew point meter pretreatment device are improved.

[0046] The arrows above the first one-way valve and the second one-way valve represent the flow direction of the natural gas.

[0047] like Figure 1 As shown, further, the water removal filter 3, the hydrocarbon removal filter 4 and the first ball valve 5 are respectively connected to a third ball valve 11 through pipelines.

[0048] The beneficial effect of adopting the above further technical solution is that the provision of the third ball valve facilitates other processing and function expansion.

[0049] like Figure 1 As shown, further, the third ball valve 11 is connected to a next-stage processing pipeline 12 through a pipeline.

[0050] The beneficial effect of adopting the above further technical solution is that a pipeline is reserved at the outlet for the possible next-level treatment. A reserved pipeline is reserved at the outlet of the device, and the next-level treatment can be continued.

[0051] like Figure 1 As shown, further, the next-stage processing pipeline 12 is connected to a natural gas analysis sampling port.

[0052] The beneficial effect of adopting the above further technical solution is that a pipeline is reserved at the outlet for possible next-level processing, which is convenient for natural gas analysis and sampling.

[0053] like Figure 1 As shown, further, the dust removal filter 1 is a mechanical impurity filter.

[0054] The beneficial effect of adopting the above further technical solution is: a mechanical impurity filter is installed at the sampling inlet to remove solid impurities in the natural gas.

[0055] The utility model provides a natural gas water hydrocarbon dew point meter pretreatment device, which can be installed with a mechanical impurity filter (dust removal filter) according to the gas quality to be analyzed and tested, and can meet the three sampling treatment methods of natural gas direct sampling, dehydrogenation, and dehydration. After the measured natural gas passes through the sampling port and passes through the dust removal filter device (dust removal filter 1) to remove solid impurities, three different pipelines of dehydrogenation, dehydration, and direct sampling can be selected respectively through the three-way valve and the ball valve (first ball valve) according to the measurement requirements. The outlet pipeline of the device is connected to the water hydrocarbon dew point meter (connected through the water hydrocarbon dew point meter inlet), so as to obtain the water dew point and hydrocarbon dew point values ​​after removing the influencing factors and the comparative measurement results without dehydration and dehydrogenation. In addition, a pipeline is reserved at the outlet for the possible next-level processing (next-level processing pipeline, such as natural gas analysis sampling, etc.).

[0056] A mechanical impurity filter (dust removal filter 1) is installed at the sampling inlet (near the sampling port), and different pipelines can be selected to meet the three sampling treatment methods of natural gas direct sampling, dehydrocarbon removal, and dehydration, thereby ensuring the accuracy of the natural gas water hydrocarbon dew point measurement results.

[0057] 1) A mechanical impurity filter is installed at the sampling inlet (near the sampling port) to remove solid impurities in the natural gas.

[0058] 2) The three-way valve and the ball valve (the first ball valve) are installed in parallel. The three-way valve is mainly involved in the switching of the water removal and hydrocarbon removal pipelines. Check valves (the first check valve and the second check valve) must be installed after the water removal and hydrocarbon removal devices to prevent gas backflow.

[0059] 3) A reserved pipeline (next-level processing pipeline) is left at the outlet of the device, so that the next-level processing (such as natural gas analysis and sampling, etc.) can be continued.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A natural gas water hydrocarbon dew point meter pretreatment device, characterized in that: include: A dust removal filter, a three-way valve, a water removal filter, a hydrocarbon removal filter, a first ball valve, and a second ball valve. The dust removal filter is connected to the three-way valve and the first ball valve through pipelines, respectively. The three-way valve is connected to the water removal filter and the hydrocarbon removal filter through pipelines, respectively. The water removal filter, the hydrocarbon removal filter, and the first ball valve are connected to the second ball valve through pipelines, respectively.

2. A natural gas water hydrocarbon dew point meter pretreatment device according to claim 1, characterized in that: One end of the dust removal filter is connected with a sampling port through a pipeline.

3. A natural gas water hydrocarbon dew point meter pretreatment device according to claim 1, characterized in that: The other end of the dust removal filter is connected to the first end of the three-way valve and one end of the first ball valve through pipelines, the second end of the three-way valve is connected to one end of the water removal filter through a pipeline, the third end of the three-way valve is connected to one end of the hydrocarbon removal filter through a pipeline, and the other end of the water removal filter, the other end of the hydrocarbon removal filter and the other end of the first ball valve are connected to one end of the second ball valve through pipelines.

4. A natural gas water hydrocarbon dew point meter pretreatment device according to claim 3, characterized in that: The other end of the second ball valve is connected to an inlet of a water hydrocarbon dew point meter through a pipeline.

5. A natural gas water hydrocarbon dew point meter pretreatment device according to claim 1, characterized in that: A first one-way valve is provided on the pipeline between the water removal filter and the second ball valve.

6. A natural gas water hydrocarbon dew point meter pretreatment device according to claim 1, characterized in that: A second one-way valve is provided on the pipeline between the hydrocarbon removal filter and the second ball valve.

7. A natural gas water hydrocarbon dew point meter pretreatment device according to claim 1, characterized in that: The water removal filter, the hydrocarbon removal filter and the first ball valve are respectively connected to a third ball valve through pipelines.

8. A natural gas water hydrocarbon dew point meter pre-treatment device according to claim 7, characterized in that: The third ball valve is connected to a next-stage processing pipeline via a pipeline.

9. A natural gas water hydrocarbon dew point meter pretreatment device according to claim 8, characterized in that: The next-stage processing pipeline is connected with a natural gas analysis sampling port.

10. A natural gas water hydrocarbon dew point meter pretreatment device according to claim 1, characterized in that: The dust removal filter is a mechanical impurity filter.

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