Labyrinth type static pressure anti-blocking sampling device
The labyrinthine static pressure sampling device addresses the issue of solid particle accumulation in measurement equipment by using baffles and vibration to guide particles to the exit, ensuring accurate measurements and reducing blockages.
Patent Information
- Application Number
- CN202422054877.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-23
AI Technical Summary
In the prior art, the sampling device containing solid particles in the gaseous medium to be tested in the pipeline has poor interception effect, resulting in inaccurate measurement or blocked measurement tube.
The maze-type static pressure anti-blocking sampling device is adopted to form a maze-type flow path using a shield plate. Combined with the static pressure principle and vibration device, solid particles are blocked from falling back to the lower sampling port, and particles are prevented from accumulating in the measurement channel by extending the path and self-weighting. The reverse blowing port and branch tube are used to reduce the probability of particles entering the branch tube.
Effectively prevent solid particles from accumulating in the measurement channel, improve measurement accuracy, reduce equipment failure risk, save energy consumption, and reduce maintenance costs.
Smart Images
Figure CN223107305U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sampling equipment, in particular to a labyrinth static pressure anti-blocking sampling device. Background Technique
[0002] For the sampling device of the gaseous medium to be measured in the pipeline containing solid particles, the bowl-type anti-blocking sampling is adopted. After the medium to be measured is intercepted by the inverted conical small bowl in the sampling bucket, it enters the measuring pipe connected to the side pressure and other measuring equipment. The solid particles fall back into the sampling port from the edge of the bowl. However, the existing conical small bowl has a poor interception effect on solid particles, or sometimes sampling is directly carried out in the pipeline system for measurement, and there is almost no anti-blocking effect. Therefore, the solid particles in the medium to be measured will accumulate in the measuring pipe, resulting in inaccurate measurement points during the daily work of the measuring equipment, and even the situation of blockage of the measuring pipe. Content of the Utility Model
[0003] The purpose of the utility model is to provide a labyrinth static pressure anti-blocking sampling device to solve the problems existing in the above-mentioned prior art and improve the measurement accuracy.
[0004] To achieve the above purpose, the utility model provides the following scheme:
[0005] The utility model provides a labyrinth static pressure anti-blocking sampling device, which includes a sampling bucket; the sampling bucket has a containing cavity, a lower sampling port and an upper opening communicated with the containing cavity; a plurality of baffle plates are fixedly arranged in the containing cavity in the vertical direction in sequence; one end of the baffle plate and the corresponding position of the inner wall of the containing cavity together form a ventilation port, and in the vertical direction, the gas on one side of the baffle plate can only flow to the other side of the baffle plate through the ventilation port; in the vertical direction, the end of the baffle plate far away from the ventilation port is higher than the end of the baffle plate close to the ventilation port; the sampling bucket has opposite first and second sides; among each adjacent two ventilation ports, one of the ventilation ports is close to the first side, and the other ventilation port is close to the second side; a measurement channel is arranged at the upper opening, and the measurement channel is communicated with the upper opening.
[0006] Preferably, an extension plate is fixedly arranged at the end of the baffle plate close to the ventilation port, the upper end of the extension plate is fixedly connected with the end of the baffle plate close to the ventilation port, and the lower end of the extension plate extends vertically downward.
[0007] Preferably, a vibration device is arranged outside the sampling bucket, and the vibration device can vibrate the outer wall of the sampling bucket.
[0008] Preferably, the vibration device includes a flexible rope and a vibration small steel ball. One end of the flexible rope is fixedly connected to the sampling bucket, and the other end of the flexible rope is fixedly connected to the vibration small steel ball.
[0009] Preferably, a straight pipe is connected to the upper opening. One end of the straight pipe is connected and communicated with the upper opening, and the other end of the straight pipe forms a reverse air blowing port; a branch pipe is communicated with the side wall of the straight pipe, and the inner cavity of the branch pipe forms the measurement channel.
[0010] Preferably, a maintenance opening is provided on the side wall of the sampling bucket, and the maintenance opening is hermetically sealed with a cover plate.
[0011] Preferably, an annular sealing gasket is provided between the cover plate and the maintenance opening.
[0012] Preferably, a conical cylinder is fixedly connected to the lower end of the sampling bucket. The large end of the conical cylinder is connected and communicated with the lower opening of the sampling bucket, and the small end of the conical cylinder is connected with a straight-through pipe. The lower opening of the straight-through pipe forms the lower sampling port.
[0013] The utility model has achieved the following technical effects compared with the prior art:
[0014] The labyrinth static pressure anti-blocking sampling device provided by the utility model, when dealing with the working condition that the gaseous medium to be measured contains solid particles, uses the static pressure principle to make the medium to be measured enter the sampling bucket. The solid particles in the medium to be measured are blocked by the baffle and fall back to the lower sampling port based on self-weight; the maze-like flow path formed by each baffle in the accommodating cavity of the sampling bucket lengthens the sampling path, so that the solid particles in the entering medium to be measured have an extended falling-back time. The solid particles fall on the inner wall of the accommodating cavity and then fall naturally by their own weight and fall back along the inclined surface of the baffle, and fall back to the original pipeline through the sampling port, effectively intercepting and preventing them from accumulating in the measurement channel, and reducing their accumulation in the sampling bucket, enhancing its anti-blocking effect, and ensuring the accuracy of measurement.
[0015] Furthermore, the extension plate provided at the ventilation port can, firstly, block the solid particles in the lower medium to be measured from flowing upward through the ventilation port, and secondly, it can form a guide for the solid particles falling back from the upper baffle above it and guide them to fall downward.
[0016] Furthermore, the vibration of the vibration device can accelerate the falling-back of the solid particles accumulated inside the sampling bucket to the lower sampling port, reduce their accumulation in the sampling bucket, and avoid equipment failures caused by inaccurate measurement.
[0017] Furthermore, the vibration device is formed by a flexible rope and small vibration steel balls. It can utilize the on-site vibration and the naturally flowing wind to make the small vibration steel balls swing back and forth outside the sampling bucket and knock on the outer wall of the sampling bucket, thereby achieving the vibration effect; making full use of energy and saving energy consumption.
[0018] Furthermore, the reverse air blowing port on the straight pipe can achieve the effect of reverse air blowing and cleaning inside the sampling bucket after introducing a certain amount of gas; and setting a branch pipe on the side wall of the straight pipe can further reduce the entry of solid particles in the medium to be measured into the branch pipe and affect the measurement accuracy.
[0019] Furthermore, the setting of the maintenance port and the cover plate is conducive to daily maintenance and repair, enabling more thorough cleaning inside the sampling bucket and reducing the daily maintenance cost.
[0020] Furthermore, the setting of the annular sealing gasket can ensure sufficient sealing between the cover plate and the maintenance port, preventing leakage from causing inaccurate measurement.
[0021] Furthermore, the setting of the conical cylinder can enable the medium to be measured entering from the lower sampling port to contact the baffle more evenly and achieve a good effect of blocking and intercepting solid particles; and the solid particles can better fall back to the lower sampling port along the inner wall slope of the conical cylinder. Description of the Drawings
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0023] Figure 1 It is a schematic diagram of the internal structure of the labyrinth static pressure anti-blocking sampling device provided by the present invention;
[0024] Figure 2 It is a schematic diagram of the external side structure of the labyrinth static pressure anti-blocking sampling device provided by the present invention;
[0025] Figure 3 It is a schematic diagram of the end cover structure of the labyrinth static pressure anti-blocking sampling device provided by the present invention;
[0026] Figure 4 It is a schematic diagram of the annular sealing gasket structure of the labyrinth static pressure anti-blocking sampling device provided by the present invention.
[0027] In the figure:
[0028] 100 - Labyrinth static pressure anti-blocking sampling device;
[0029] 10 - Sampling bucket; 11 - Straight pipe; 12 - Reverse air blowing port; 13 - Branch pipe; 14 - Accommodating cavity; 15 - Conical cylinder; 16 - Straight-through pipe; 17 - Lower sampling port; 18 - Maintenance port;
[0030] 20 - Baffle plate; 21 - Ventilation opening; 22 - Extension plate;
[0031] 30 - Vibration device; 31 - Flexible rope; 32 - Small vibration steel ball;
[0032] 40 - Cover plate; 41 - Annular sealing gasket. Specific implementation manner
[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0034] The purpose of the present invention is to provide a labyrinth static pressure anti-blocking sampling device to solve the problems existing in the prior art and improve the measurement accuracy.
[0035] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.
[0036] Embodiment 1
[0037] This embodiment provides a labyrinth static pressure anti-blocking sampling device 100, which is mainly but not limited to being used on the pressure sampling measuring points for measuring air or air containing solid particles (which has an outlet for the medium to be measured and is used to connect to the lower sampling port 17), such as Figures 1 to 4 As shown, it includes a sampling bucket 10; the sampling bucket 10 has an accommodating cavity 14, a lower sampling port 17 communicating with the accommodating cavity 14, and an upper opening; a plurality of baffle plates 20 are fixedly arranged in the accommodating cavity 14 in the vertical direction in sequence; one end of the baffle plate 20 and the corresponding position on the inner wall of the accommodating cavity 14 together form a ventilation opening 21. In the vertical direction, the gas on one side of the baffle plate 20 can only flow to the other side of the baffle plate 20 through the ventilation opening 21; in the vertical direction, the end of the baffle plate 20 away from the ventilation opening 21 is higher than the end of the baffle plate 20 close to the ventilation opening 21; the sampling bucket 10 has opposite first and second sides; among each adjacent two ventilation openings 21, one ventilation opening 21 is close to the first side, and the other ventilation opening 21 is close to the second side; a measurement channel is arranged at the upper opening, and the measurement channel communicates with the upper opening.
[0038] When dealing with the working condition where the gaseous medium to be measured contains solid particles, the static pressure principle is utilized to allow the medium to be measured to enter the sampling bucket 10. The solid particles in the medium to be measured are blocked by the baffle plate 20 and fall back to the lower sampling port 17 based on self-weight; the baffle plates 20 form a labyrinthine flow path in the accommodation cavity 14 of the sampling bucket 10, which lengthens the sampling path, thereby prolonging the falling time of the solid particles in the medium to be measured entering. After the solid particles fall on the inner wall of the accommodation cavity 14, they naturally fall by their own weight and fall along the inclined surface of the baffle plate 20, and fall back to the original pipeline through the sampling port 17, effectively intercepting them so that they do not accumulate in the measurement channel, and reducing their accumulation in the sampling bucket 10, enhancing its anti-blocking effect, and ensuring the accuracy of measurement.
[0039] Among them, other descriptions of the sampling bucket 10 are as follows:
[0040] In an alternative solution of this embodiment, preferably, as Figure 1 shown, the upper opening is connected with a straight pipe 11. One end of the straight pipe 11 is connected to and communicates with the upper opening, and the other end of the straight pipe 11 forms a reverse air blowing port 12; a branch pipe 13 is communicated with the side wall of the straight pipe 11, and the inner cavity of the branch pipe 13 forms a measurement channel. The reverse air blowing port 12 on the straight pipe 11 can achieve the effect of reverse air blowing and cleaning inside the sampling bucket 10 after introducing a certain amount of gas; and setting the branch pipe 13 on the side wall of the straight pipe 11 can further reduce the entry of solid particles in the medium to be measured into the branch pipe 13, affecting the measurement accuracy.
[0041] Specifically, when the sampling bucket 10 is in use, it is in a vertical posture, the lower sampling port 17 is located below the upper opening, and both the reverse air blowing port 12 on the straight pipe 11 and the end of the branch pipe 13 are in a blocked state, and the medium to be measured diffuses into the sampling bucket 10; when it is necessary to clean the inside of the sampling bucket 10 through the reverse air blowing port 12, compressed gas is connected at the reverse air blowing port 12 to achieve it; a measuring device or component mainly but not limited to pressure is connected and installed on the branch pipe 13.
[0042] In an alternative solution of this embodiment, preferably, as Figure 1 and Figure 3 shown, a maintenance port 18 is provided on the side wall of the sampling bucket 10, and the maintenance port 18 is hermetically sealed with a cover plate 40. The setting of the maintenance port 18 and the cover plate 40 is conducive to daily maintenance and repair, enabling more thorough cleaning of the inside of the sampling bucket 10, and reducing the daily maintenance cost.
[0043] In an alternative solution of this embodiment, preferably, as Figure 4 shown, an annular sealing gasket 41 is provided between the cover plate 40 and the maintenance port 18. The setting of the annular sealing gasket 41 can ensure sufficient sealing between the cover plate 40 and the maintenance port 18, preventing leakage from causing inaccurate measurement.
[0044] Among the optional solutions of this embodiment, it is more preferred that Figure 1 and Figure 2 As shown, a conical cylinder 15 is fixedly connected to the lower end of the sampling barrel 10, the large end of the conical cylinder 15 is connected and communicated with the lower end opening of the sampling barrel 10, and the small end of the conical cylinder 15 is connected with a straight pipe 16, and the lower end opening of the straight pipe 16 forms a lower sampling port 17. The setting of the conical cylinder 15 can make the medium to be tested entering from the lower sampling port 17 contact the shielding plate 20 more evenly to achieve a good blocking and intercepting effect on solid particles; and the solid particles can fall back to the lower sampling port 17 better along the inner wall slope of the conical cylinder 15.
[0045] Among them, other descriptions about the shielding plate 20 are as follows:
[0046] Among the optional solutions of this embodiment, it is more preferred that Figure 1 As shown, an extension plate 22 is fixedly provided at one end of the shielding plate 20 near the vent 21, the upper end of the extension plate 22 is fixedly connected to the end of the shielding plate 20 near the vent 21, and the lower end of the extension plate 22 extends downward in the vertical direction. The extension plate 22 provided at the vent 21 can, on the one hand, block the solid particles in the medium to be tested below from flowing upward through the vent 21, and on the other hand, it can guide the solid particles falling back from the shielding plate 20 above it, guiding them to fall back downward.
[0047] In order to increase the falling effect of solid particles, the following settings can also be made:
[0048] Among the optional solutions of this embodiment, it is more preferred that Figure 2 As shown, a rapping device 30 is provided outside the sampling barrel 10, and the rapping device 30 can rap the outer wall of the sampling barrel 10. The rapping of the rapping device 30 can accelerate the solid particles accumulated inside the sampling barrel 10 to fall back to the lower sampling port 17, reduce their accumulation in the sampling barrel 10, and avoid equipment failure caused by inaccurate measurement.
[0049] Specifically, in addition to the following components and implementations, the rapping device 30 may also adopt any existing device that can rappe the sampling barrel 10 .
[0050] Among the optional solutions of this embodiment, it is more preferred that Figure 2 As shown, the rapping device 30 includes a flexible rope 31 and a rapping small steel ball 32, one end of the flexible rope 31 is fixedly connected to the sampling bucket 10, and the other end of the flexible rope 31 is fixedly connected to the rapping small steel ball 32. The rapping device 30 is formed by the flexible rope 31 and the rapping small steel ball 32, which can make use of the vibration on site and the naturally circulating wind to make the rapping small steel ball 32 swing back and forth outside the sampling bucket 10 and hit the outer wall of the sampling bucket 10, thereby achieving a rapping effect; making full use of energy and saving energy consumption.
[0051] In this utility model, specific examples are used to elaborate on the principles and implementation manners of the utility model. The description of the above embodiments is only used to help understand the method and its core idea of the utility model; at the same time, for those of ordinary skill in the art, according to the idea of the utility model, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation on the utility model.
Claims
1. A labyrinth static pressure anti-blocking sampling device, characterized in that: It includes a sampling bucket; The sampling bucket has a containing cavity, a lower sampling port and an upper opening that communicate with the containing cavity; A plurality of baffle plates are fixedly arranged in the containing cavity in the vertical direction in sequence; one end of the baffle plate and the corresponding position on the inner wall of the containing cavity jointly form a ventilation port. In the vertical direction, the gas on one side of the baffle plate can only flow to the other side of the baffle plate through the ventilation port; In the vertical direction, the end of the baffle plate far from the ventilation port is higher than the end of the baffle plate close to the ventilation port; The sampling bucket has opposite first and second sides; among each adjacent two ventilation ports, one ventilation port is close to the first side and the other ventilation port is close to the second side; A measurement channel is arranged at the upper opening, and the measurement channel communicates with the upper opening.
2. The labyrinth static pressure anti-blocking sampling device according to claim 1, wherein: An extension plate is fixedly arranged at the end of the baffle plate close to the ventilation port. The upper end of the extension plate is fixedly connected to the end of the baffle plate close to the ventilation port, and the lower end of the extension plate extends vertically downward.
3. The labyrinth static pressure anti-blocking sampling device according to claim 1, characterized in that: A vibration device is arranged outside the sampling bucket, and the vibration device can vibrate the outer wall of the sampling bucket.
4. The labyrinth static pressure anti-blocking sampling device according to claim 3, wherein: The vibration device includes a flexible rope and a vibration small steel ball. One end of the flexible rope is fixedly connected to the sampling bucket, and the other end of the flexible rope is fixedly connected to the vibration small steel ball.
5. The labyrinth static pressure anti-blocking sampling device according to claim 1, characterized in that: The upper opening is connected with a straight pipe. One end of the straight pipe is connected and communicated with the upper opening, and the other end of the straight pipe forms a reverse blowing port; A branch pipe is communicated with the side wall of the straight pipe, and the inner cavity of the branch pipe forms the measurement channel.
6. The labyrinth static pressure anti-blocking sampling device according to claim 1, characterized in that: An inspection opening is arranged on the side wall of the sampling bucket, and the inspection opening is sealed with a cover plate.
7. The labyrinth static pressure anti-blocking sampling device according to claim 6, wherein: An annular sealing gasket is arranged between the cover plate and the inspection opening.
8. The labyrinth static pressure anti-blocking sampling device according to claim 1, wherein: The lower end of the sampling bucket is fixedly connected with a conical cylinder. The large end of the conical cylinder is connected and communicated with the lower opening of the sampling bucket. The small end of the conical cylinder is connected with a straight-through pipe, and the lower opening of the straight-through pipe forms the lower sampling port.