A pipeline pressure sampling pipe back flushing device

Abstract

The utility model discloses a pipeline pressure sampling pipe back flushing device, including the connecting pipe, the connecting pipe is installed in the middle part of sampling pipe, and the connecting pipe is connected with back flushing pump away from sampling pipe one end, and the input end of back flushing pump is connected with filter box, and the input end of filter box is connected with medium pipe, and the other end of medium pipe is connected sampling pipeline, and the input end of medium pipe and the output end of connecting pipe all are equipped with control valve. The utility model discloses through the medium of the sampling pipeline that is obtained, after filtering, through the back flushing pump pressure boost to the residual material in sampling pipe carries out the spouting, carries out the cleaning to sampling pipe, improves the sampling precision and the service life of sampling pipe.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline pressure sampling technology and relates to a pipeline pressure sampling tube backflushing device. Background Technology

[0002] A pressure sampling tube is a type of conduit used to sample the pressure within a pipeline or pressure-bearing equipment. A pressure sampling tube typically consists of a pipe installed at the sampling location and a pressure switch or pressure transmitter installed at the end of the pipe. The pressure switch or pressure transmitter pressurizes the sampling medium entering the sampling tube, thereby detecting the pressure at the sampling location.

[0003] However, some sampling media may adhere to the inner wall of the sampling tube. For example, when sampling in the furnace, fly ash and other materials in the furnace may enter the sampling tube, affecting the sampling accuracy and the service life of the sampling tube. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a pipeline pressure sampling tube backflushing device, which effectively solves the problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A pipeline pressure sampling tube backflushing device, comprising:

[0007] A connecting tube, wherein the connecting tube is installed in the middle of the sampling tube;

[0008] A backflush pump, the output end of which is connected to the end of the connecting pipe furthest from the sampling pipe;

[0009] A filter box, which is connected to the input end of the backflush pump;

[0010] A media tube, the first end of which is connected to the filter box and the second end of which is connected to the sampling pipe;

[0011] The control valve is installed at both the input end of the medium pipe and the output end of the connecting pipe.

[0012] Optionally, a medium bottle is installed between the backflush pump and the connecting pipe, and the control valve is provided at both the input and output ends of the medium bottle.

[0013] Optionally, the control valve is installed on the end of the connecting pipe near the pressure transmitter.

[0014] Optionally, a pressure gauge is provided at the upper end of the medium bottle, and the pressure gauge signal is connected to the backflush pump.

[0015] Optionally, the filter box includes a box body, a filter screen is installed inside the box body, a drain port is provided at the bottom of the box body, and a cover is threadedly sealed to the drain port.

[0016] Optionally, a backflush pipe is connected between the medium bottle and the filter box, and the backflush pipe is equipped with the control valve.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Connect a medium tube to the sampling pipeline. The medium tube obtains the flowing medium in the sampling pipeline. The medium is filtered through a filter box. The filtered medium is then sprayed into the sampling tube through a backflush pump to purge any residual substances in the sampling tube. In this way, by obtaining the medium from the sampling pipeline, filtering it, and then pressurizing it with a backflush pump to purge any residual substances in the sampling tube, the sampling tube is cleaned, improving sampling accuracy and extending the service life of the sampling tube.

[0019] 2. The setting of the filter box may affect the backflush pressure provided by the backflush pump. By setting up a medium bottle, the filtered medium can be pressurized and stored in advance, reducing the impact of the filtration speed on the jet when backflush is required.

[0020] 3. By setting up a drain outlet and a backflush pipe, the filter screen is backflushd through a media bottle, which facilitates the cleaning of impurities filtered out of the filter box. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0022] Reference numerals: 1. Connecting pipe; 101. Sampling pipe; 102. Sampling pipeline; 103. Pressure transmitter; 2. Backflush pump; 3. Filter box; 31. Box body; 32. Filter screen; 33. Cover; 4. Medium pipe; 5. Control valve; 6. Medium bottle; 61. Pressure gauge; 62. Backflush pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1This utility model discloses a pipeline pressure sampling tube backflush device, which includes a connecting pipe 1, which is installed in the middle of the sampling tube 101. The end of the connecting pipe 1 away from the sampling tube 101 is connected to a backflush pump 2. The input end of the backflush pump 2 is connected to a filter box 3. The input end of the filter box 3 is connected to a medium pipe 4. The other end of the medium pipe 4 is connected to the sampling pipeline 102. Control valves 5 are installed at both the input end of the medium pipe 4 and the output end of the connecting pipe 1.

[0025] Specifically, a medium pipe 4 is connected to the sampling pipe 102. The medium pipe 4 obtains the flowing medium in the sampling pipe 102, filters the medium through the filter box 3, and the filtered medium is sprayed into the sampling pipe 101 through the backflush pump 2 to blow away the residual substances in the sampling pipe 101.

[0026] In this way, by obtaining the medium in the sampling pipe 102, after filtration, the residual substances in the sampling pipe 101 are sprayed out by the backflush pump 2 to clean the sampling pipe 101, thereby improving the sampling accuracy and the service life of the sampling pipe 101.

[0027] In some feasible configurations, the connecting pipe 1 is a T-shaped tube, with its two ends connected to the sampling pipe 101 and the pressure transmitter 103, respectively. The other end of the connecting pipe 1 is connected to the control valve 5, which in turn is connected to the backflush pump 2. The backflush pump 2 is connected to the filter box 3. The filter structure of the filter box 3 can be configured according to the medium and impurities in the sampling pipe 102 to specifically intercept impurities. When the impact of impurities is minimal, a filter structure may not be required.

[0028] In some feasible methods, the control valve 5 is connected to the backflush pump 2 by a program control module, which automatically controls the periodic start-up of the control valve 5 and the backflush pump 2 for spraying.

[0029] Under normal conditions, the medium pressure is transmitted to the pressure transmitter 103 for pressure detection after passing through the sampling pipe 101 and connecting pipe 1. A backflush cycle is set, and the control system opens the control valve 5 and starts the backflush pump 2 to extract the medium in the sampling pipe 102 for backflushing. By extracting the medium from the sampling pipe 102, the influence of introducing other backflush media on the substances inside the sampling pipe 102 is reduced.

[0030] As a specific embodiment of the pipeline pressure sampling tube backflush device provided in the application, a medium bottle 6 is installed between the backflush pump 2 and the connecting pipe 1, and control valves 5 are provided at both the input and output ends of the medium bottle 6.

[0031] Overall, the setting of filter box 3 may affect the backflush pressure provided by backflush pump 2. By setting up medium bottle 6, the filtered medium is pressurized and stored in advance, reducing the impact of filtration speed on jetting when backflush is required.

[0032] In some feasible methods, when the medium is gas, the gas is pressurized; when the medium is liquid, some gas can be stored in the medium bottle 6. When the liquid is stored in the backflush pump 2, the liquid level rises and compresses the gas. When the sampling tube 101 is blown, the liquid medium is pushed out by the gas pressure for blowing.

[0033] Furthermore, a control valve 5 is installed at one end of the connecting pipe 1 near the pressure transmitter 103.

[0034] It should be understood that by installing a control valve 5 at one end near the pressure transmitter 103, and closing the control valve 5 during purging, the impact of sudden pressure increases on the pressure transmitter 103 is reduced.

[0035] Furthermore, a pressure gauge 61 is installed at the upper end of the medium bottle 6, and the pressure gauge 61 is connected to the backflush pump 2.

[0036] It should be understood that by setting pressure gauge 61, the pressure of medium bottle 6 is monitored, which facilitates the automatic start and stop of backflush pump 2.

[0037] In some feasible methods, pressure gauge 61 is a gas pressure gauge. When the medium in sampling pipeline 102 is liquid, a level gauge can also be installed to facilitate monitoring of the pressure in medium bottle 6.

[0038] Furthermore, the filter box 3 includes a box body 31, a filter screen 32 is installed inside the box body 31, a drain port is provided at the bottom of the box body 31, and a cover 33 is threadedly sealed to the drain port.

[0039] It should be understood that by setting up a drain outlet, it is convenient to clean the impurities filtered out in the filter box 3.

[0040] Furthermore, a backflush pipe 62 is connected between the medium bottle 6 and the filter box 3, and the backflush pipe 62 is equipped with a control valve 5.

[0041] It should be understood that the backflush pipe 62 is installed to backflush the filter screen 32 through the medium bottle 6, which facilitates the cleaning of impurities.

[0042] In some feasible configurations, the bottom of the housing 31 is connected to a media pipe 4, the upper part of the housing 31 is connected to a backflush pump 2 and a backflush pipe 62, and the filter screen 32 is located in the middle of the housing 31. To improve automation, the drain outlet can be configured as a drain pipe, and a control valve 5 is installed on the drain pipe.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pipeline pressure sampling tube backflushing device, characterized in that, include: A connecting tube (1) is installed in the middle of the sampling tube; Backflush pump (2), the output end of which is connected to the end of the connecting pipe (1) away from the sampling pipe; A filter box (3) is connected to the input end of the backflush pump (2); Medium tube (4), the first end of the medium tube (4) is connected to the filter box (3), and the second end is connected to the sampling pipe; The control valve (5) is installed at both the input end of the medium pipe (4) and the output end of the connecting pipe (1).

2. The pipeline pressure sampling tube backflushing device according to claim 1, characterized in that: A medium bottle (6) is installed between the backflush pump (2) and the connecting pipe (1), and the control valve (5) is provided at both the input and output ends of the medium bottle (6).

3. The pipeline pressure sampling tube backflushing device according to claim 2, characterized in that: The control valve (5) is installed on the end of the sampling pipe near the pressure transmitter.

4. The pipeline pressure sampling tube backflushing device according to claim 2, characterized in that: A pressure gauge (61) is provided at the upper end of the medium bottle (6), and the pressure gauge (61) is connected to the backflush pump (2).

5. A pipeline pressure sampling tube backflushing device according to claim 2, characterized in that: The filter box (3) includes a box body (31), a filter screen (32) is installed inside the box body (31), and a drain port is provided at the bottom of the box body (31), and a cover (33) is threadedly sealed to the drain port.

6. The pipeline pressure sampling tube backflushing device according to claim 5, characterized in that: A backflush pipe (62) is connected between the medium bottle (6) and the filter box (3), and the backflush pipe (62) is equipped with the control valve (5).

Images