Denitration CEMS analyzer sampling system

Abstract

The utility model relates to the technical field of denitration CEMS analyzer sampling systems, in particular to a denitration CEMS analyzer sampling system which comprises an instrument and a sampling assembly, the sampling assembly comprises an air source pump, a first needle valve, a second needle valve and a compressed air filter, the air source pump is arranged on one side of the instrument, the first needle valve is arranged on the other side of the instrument, and the second needle valve is arranged on the other side of the instrument. The first needle valve is arranged on one side of the air source pump, the second needle valve is arranged on the other side of the air source pump, and the compressed air filter is arranged on one side of the second needle valve. The utility model has the beneficial effects that after the original electric vacuum pump driven by a power supply is replaced by the Venturi pump, the instrument is driven by a gas source and is not influenced by ash sulfur components, and the Venturi pump is simple in structure, stable in sampling and more durable; the Venturi pump is longer in service life and can continuously and stably run for 2-3 years.

Description

TECHNICAL FIELD

[0001] The utility model relates to denitration CEMS analysis appearance sampling system technical field, especially a kind of denitration CEMS analysis appearance sampling system. BACKGROUND

[0002] The original sampling pump of denitration CEMS analysis appearance is electric vacuum pump, because of the components such as ash, sulfur, dust contained in medium, the pump bearing and shaft system are prone to scale corrosion, leading to sampling interruption, affecting sampling function and numerical accuracy and reliability, to improve the service life of denitration CEMS analysis appearance sampling system, ensure data stable operation, reduce artificial maintenance difficulty and time cost and reduce spare parts replacement maintenance cost, new way is designed. SUMMARY

[0003] In view of the above-mentioned existing original sampling pump of denitration CEMS analysis appearance is affected by medium, can lead to inaccurate numerical technical problem, the utility model is presented.

[0004] The utility model aims at providing a kind of denitration CEMS analysis appearance sampling system, its purpose is to solve by replacing electric vacuum pump with gas source pump, driving gas source adjustment is not easy to damage after stabilization, can guarantee continuous accurate sampling.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: instrument and sampling component, the sampling component includes gas source pump, first needle valve, second needle valve and compressed air filter, the gas source pump is set on the side of the instrument, the first needle valve is set on the side of the gas source pump, the second needle valve is set on the other side of the gas source pump, and the compressed air filter is set on the side of the second needle valve.

[0006] As a preferred scheme of the utility model denitration CEMS analysis appearance sampling system, wherein: the first needle valve and the second needle valve are separately arranged.

[0007] As a preferred scheme of the utility model denitration CEMS analysis appearance sampling system, wherein: the instrument is nitrogen oxide instrument.

[0008] As a preferred scheme of the utility model denitration CEMS analysis appearance sampling system, wherein: the gas source pump is venturi pump.

[0009] As a preferred scheme of the utility model denitration CEMS analysis appearance sampling system, wherein: the first needle valve is arranged between the instrument and the gas source pump.

[0010] As a preferred scheme of the utility model denitration CEMS analysis appearance sampling system, wherein: the second needle valve is arranged between the gas source pump and the compressed air filter.

[0011] As a preferred scheme of the denitration CEMS analyzer sampling system of the utility model, wherein: the first needle valve control instrument sampling flow.

[0012] As a preferred scheme of the denitration CEMS analyzer sampling system of the utility model, wherein: the first needle valve sampling range is 0.350L / min-0.900L / min.

[0013] As a preferred scheme of the denitration CEMS analyzer sampling system of the utility model, wherein: the compressed air filter compression instrument gas enters the second needle valve, so that the second needle valve controls the gas pressure of the gas source pump.

[0014] As a preferred scheme of the denitration CEMS analyzer sampling system of the utility model, wherein: the second needle valve control pressure is 0.35mpa-0.4mpa.

[0015] The denitration CEMS analyzer sampling system of the utility model has the beneficial effects that: after the original power-driven electric vacuum pump is replaced by a Venturi pump, the instrument uses gas source as the driving force and is not affected by ash and sulfur components, the Venturi pump has a simple structure, stable sampling and is more durable; the Venturi pump has a longer service life and can be continuously and stably operated for 2-3 years. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor. Wherein:

[0017] Figure 1 It is the denitration CEMS analyzer sampling system structure schematic view in the utility model. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model will be described in detail in the following with the drawings in the specification.

[0019] In the following description, many specific details are set forth in order to provide a thorough understanding of the utility model, but the utility model can also be implemented in other ways different from the description herein, and those skilled in the art can make similar generalization without departing from the connotation of the utility model, therefore, the utility model is not limited by the specific embodiments disclosed below.

[0020] Secondly, the "one embodiment" or "embodiment" referred to herein means that a specific feature, structure, or characteristic described can be included in at least one implementation of the present application. The "in one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent of or mutually exclusive with other embodiments.

[0021] Embodiment 1

[0022] Referring to Figure 1 For the first embodiment of the present application, the embodiment provides a denitration CEMS analyzer sampling system, which comprises an instrument 101 and a sampling assembly 102.

[0023] Preferably, the sampling assembly 102 comprises an air source pump 102a, a first needle valve 102b, a second needle valve 102c, and a compressed air filter 102d. The air source pump 102a is arranged on one side of the instrument 101, the first needle valve 102b is arranged on one side of the air source pump 102a, the second needle valve 102c is arranged on the other side of the air source pump 102a, and the compressed air filter 102d is arranged on one side of the second needle valve 102c. By using the air source pump 102a instead of the electric vacuum pump, the instrument air compressed by the compressed air filter 102d enters the air source pump 102a, and the first needle valve 102b and the second needle valve 102c adjust the flow and air pressure respectively.

[0024] In use, by using the air source pump 102a instead of the electric vacuum pump, the sampling flow cannot be stabilized without increasing the first needle valve 102b, the instrument 101 will alarm, and the instrument air from the compressed air filter 102d into the air source pump 102a will affect the sampling pressure without increasing the second needle valve 102c. The first needle valve 102b and the second needle valve 102c adjust the flow and air pressure respectively, the air source pump 102a, the compressed air filter 102d, the first needle valve 102b, and the second needle valve 102c realize the replacement of the electric vacuum pump, and at the same time, the data stability can be ensured.

[0025] Embodiment 2

[0026] Referring to Figure 1 For the second embodiment of the present application, the first needle valve 102b and the second needle valve 102c are arranged separately, the first needle valve 102b and the second needle valve 102c must be arranged separately, the first needle valve 102b controls the sampling flow and the instrument reaction chamber pressure, and the second needle valve 102c controls the compressed air pressure.

[0027] Preferably, the instrument 101 is a nitrogen oxide instrument, and the denitration CEMS analyzer sampling system is a modification for the nitrogen oxide instrument.

[0028] Preferably, the air source pump 102a is a Venturi pump, and in the embodiment, the air source pump 102a is preferably a Venturi pump, which has a simple internal structure and is convenient for later maintenance.

[0029] Further, the first needle valve 102b is arranged between the instrument 101 and the air source pump 102a, and the first needle valve 102b controls the sampling flow of the instrument 101, so that the sampling flow of the instrument 101 is within the qualified range of the instrument 101; and the second needle valve 102c is arranged between the air source pump 102a and the compressed air filter 102d, and the second needle valve 102c controls the pressure of the instrument air, so as to ensure the normal working of the Venturi pump.

[0030] In use, the first needle valve 102b and the second needle valve 102c must be arranged separately, the first needle valve 102b controls the sampling flow and the pressure of the reaction chamber of the instrument, and the second needle valve 102c controls the pressure of the compressed air; the air source pump 102a is preferably a Venturi pump, the first needle valve 102b is arranged between the instrument 101 and the air source pump 102a, and the first needle valve 102b controls the sampling flow of the instrument 101, so that the sampling flow of the instrument 101 is within the qualified range of the instrument 101; and the second needle valve 102c is arranged between the air source pump 102a and the compressed air filter 102d, and the second needle valve 102c controls the pressure of the instrument air of the Venturi pump, so as to ensure the normal working of the Venturi pump.

[0031] Embodiment 3

[0032] Reference Figure 1 For the third embodiment of the utility model, different from the previous embodiment, the first needle valve 102b controls the sampling flow of the instrument 101, so that the sampling flow of the instrument is within the qualified range of the instrument.

[0033] Further, the sampling range of the first needle valve 102b is 0.350L / min-0.900L / min, and the flow can reach 2L / min without increasing the first needle valve 102b; the pressure of the reaction chamber is normally 150mmhg-275mmhg, and the pressure can be controlled within the normal range by increasing the first needle valve 102b, otherwise the pressure can be above 300mmhg.

[0034] Preferably, the second needle valve 102c controls the pressure of the instrument air of the compressed air filter 102d, so as to ensure the normal working of the Venturi pump.

[0035] Further, the second needle valve 102c controls the pressure to be 0.35mpa-0.4mpa, the second needle valve 102c controls the pressure of the compressed air, fine-tunes the inlet pressure, ensures that the flow and the pressure are within the normal range, and the inlet pressure is unstable without increasing the second needle valve 102c, which leads to the jump of the flow and the pressure, affects the measurement data of the instrument, the second needle valve 102c controls the pressure to be 0.35mpa-0.4mpa, and the suction of the Venturi pump is ensured, and the flow is further controlled.

[0036] In use, the first needle valve 102b has a sampling range of 0.350L / min-0.900L / min, and the flow rate can reach 2L / min without increasing the first needle valve 102b, the reaction chamber pressure is normally 150mmhg-275mmhg, increasing the first needle valve 102b can control the pressure in the normal range, otherwise the pressure will exceed 300mmhg or more, the second needle valve 102c controls the pressure at 0.35mpa-0.4mpa, the second needle valve 102c controls the compressed air pressure, fine-tunes the pressure, ensures that the flow rate and pressure are in the normal range, and does not increase the second needle valve 102c inlet pressure, which is unstable, causing the flow rate and pressure to jump, affecting the instrument measurement data, and the second needle valve 102c controls the compressed air filter 102d instrument air pressure, ensuring the Venturi pump suction, further controlling the flow rate.

[0037] Importantly, it should be noted that the constructions and arrangements of the present application shown in the various different exemplary embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in the application. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be altered or varied. Accordingly, all such modifications are intended to be included within the scope of the present application. The order or sequence of any process or method steps can be varied or re-sequenced without materially affecting the application. Any "means plus function" clauses are intended to cover the structures described herein as performing the recited functionality and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present application. Accordingly, the present application is not limited to the particular embodiments described and illustrated herein, but extends to equivalents of which the skilled artisan has knowledge in the field. It is therefore intended that the present application not be limited to the particular embodiment illustrated and discussed, but that the application will include all embodiments falling within the scope of the appended claims.

[0038] Furthermore, in the interest of providing a concise description of exemplary embodiments, not all features of an actual implementation can be described (i.e., those unrelated to the best mode of practicing the present application, or those unrelated to any implementation of the present application).

[0039] It is to be understood that the development of the particular implementations described herein was not determined merely by the availability of certain items or materials. Rather and more generally, specific implementations can be determined, for example, based on the particular requirements of the instrument or system to which that implementation relates. For example, a specific implementation of a reagent or kit can be determined based on the number of assays or assays types that are to be performed by the instrument or system that implementation relates to.

[0040] It should be noted that the above examples are only used to illustrate the technical solutions of the present application, not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A sampling system for a denitrification CEMS analyzer, characterized in that: include, The instrument (101) and sampling assembly (102) include an air source pump (102a), a first needle valve (102b), a second needle valve (102c), and a compressed air filter (102d). The air source pump (102a) is located on one side of the instrument (101), the first needle valve (102b) is located on one side of the air source pump (102a), the second needle valve (102c) is located on the other side of the air source pump (102a), and the compressed air filter (102d) is located on one side of the second needle valve (102c).

2. The sampling system for the denitrification CEMS analyzer as described in claim 1, characterized in that: The first needle valve (102b) and the second needle valve (102c) are set separately.

3. The sampling system of the denitrification CEMS analyzer as described in claim 1, characterized in that: The instrument (101) is a nitrogen oxide instrument.

4. The sampling system of the denitrification CEMS analyzer as described in claim 2, characterized in that: The air source pump (102a) is a Venturi pump.

5. The sampling system for the denitrification CEMS analyzer as described in claim 4, characterized in that: The first needle valve (102b) is located between the instrument (101) and the air source pump (102a).

6. The sampling system of the denitrification CEMS analyzer as described in claim 5, characterized in that: The second needle valve (102c) is disposed between the air source pump (102a) and the compressed air filter (102d).

7. The sampling system for the denitrification CEMS analyzer as described in claim 1 or 6, characterized in that: The first needle valve (102b) controls the instrument (101) to sample the flow rate.

8. The sampling system of the denitrification CEMS analyzer as described in claim 7, characterized in that: The sampling range of the first needle valve (102b) is 0.350L / min-0.900L / min.

9. The sampling system of the denitrification CEMS analyzer as described in claim 1 or 8, characterized in that: The compressed air filter (102d) compresses instrument air into the second needle valve (102c), which in turn controls the gas pressure of the air source pump (102a).

10. The sampling system of the denitrification CEMS analyzer as described in claim 9, characterized in that: The second needle valve (102c) controls the pressure between 0.35 MPa and 0.4 MPa.

Images