CN210689748U - Hinge link type efficient self-cleaning device - Google Patents
Hinge link type efficient self-cleaning device Download PDFInfo
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- CN210689748U CN210689748U CN201921653516.0U CN201921653516U CN210689748U CN 210689748 U CN210689748 U CN 210689748U CN 201921653516 U CN201921653516 U CN 201921653516U CN 210689748 U CN210689748 U CN 210689748U
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Abstract
The utility model provides a hinge link type high-efficiency self-cleaning device which is respectively arranged in a full-pressure tapping pipe and a static-pressure tapping pipe of an S-shaped leather-supported pipe type gas flow velocity measuring element; the length of each hinge link type efficient ash removal device penetrates through a full-pressure tapping pipe and a static-pressure tapping pipe respectively and reaches a full-pressure tapping port and a static-pressure tapping port, and each hinge link type efficient ash removal device comprises a mounting bolt, a plurality of rigid ash removal rod sections, a plurality of hinge connection sections and an ash removal pendulum bob; the upper end of the hinge link type efficient ash removal device is fixedly arranged at the upper parts in the pipelines of the full-pressure pipe and the static-pressure pipe by mounting bolts respectively, wherein each rigid ash removal rod joint is connected by a hinge connecting joint; wherein the bottom of the mounting bolt is fixedly connected with the hinge joint at the uppermost end; the lower part of the rigid ash removing rod section at the lowest end is welded with an ash removing pendulum bob. The utility model discloses can improve ash removal device's swing flexibility and irregularity in order to reach the best state of deashing effect.
Description
Technical Field
The utility model relates to a be applied to interior dusty airflow measuring equipment's of boiler major diameter pipeline from dust removal device, especially relate to a hinge yoke lever type is high-efficient from cleaning device.
Background
A gas flow velocity and flow measurement device based on a differential pressure measurement principle of an S-shaped pitot tube is a technical device which can be widely applied to air quantity measurement of large industrial pipelines. The measuring device element is inserted into the air duct, when air flows, the windward side measures the total pressure of the air flow, and the leeward side measures the static pressure of the air flow. The differential pressure value of the total pressure and the static pressure and the measured flow velocity value have a corresponding calculation relationship, and the flow velocity and the flow rate of the gas in the air duct can be accurately measured by utilizing the relationship principle. In the detection environment of gas-solid mixed fluid, the S-shaped pitot tube has the advantages of accurate measurement, high temperature resistance and difficult abrasion, and has wider reliability.
Generally, most of self-ash-cleaning structures of S-shaped pitot tube gas flow velocity and flow measurement devices are rigid ash-cleaning rods, one end of each ash-cleaning rod is hinged to the upper part in a pressure taking port, and the other end of each ash-cleaning rod naturally hangs down to the pressure taking port of the pressure measuring pipe. When the fluid working medium flows through, the ash removal rod is driven to swing and oscillate and knock the pressure-taking pipe orifice, so that dust is not easy to accumulate at the pipe orifice, and the automatic ash removal effect is achieved. However, the rigid ash removal bar is limited by the rigid lever-type structure of the rigid ash removal bar, which is beneficial to cleaning the accumulated ash at the pressure extraction opening, but is difficult to effectively clean the ash and dirt in the deep wall of the pressure measurement pipe, so that the rigid ash removal bar has certain limitation.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high-efficient self-cleaning device of hinge link formula adopts hinge link rod deashing structural design to make it need not extra energy supply and can clear up the dust of measuring mouthful and pressure-measuring pipe inner wall depths automatically, avoids causing gas flow velocity flow to detect inaccurately because of unable frequent artifical clearance dust and block up the measuring mouth, can extensively be applicable to firepower and other high temperature high dust fluid measurement technical field.
The utility model discloses a realize through following technical scheme: a hinge link type efficient self-cleaning device is characterized in that a hinge link type efficient ash removal device is respectively arranged in a full-pressure taking pipe and a static-pressure taking pipe of an S-shaped Pitot tube type gas flow velocity measurement element; the length of each hinge link type efficient ash removal device penetrates through a full-pressure taking pipe and a static-pressure taking pipe respectively and reaches a full-pressure taking port and a static-pressure taking port, and each hinge link type efficient ash removal device comprises a mounting bolt, a plurality of rigid ash removal rod sections, a plurality of hinge connection sections and an ash removal pendulum bob; the upper end of the hinge link type efficient ash removal device is fixedly arranged at the upper parts in the pipelines of the full-pressure pipe and the static pressure pipe by mounting bolts respectively, and the lower end naturally hangs down along the centers of the cross sections of the pipelines of the full-pressure pipe and the static pressure pipe; wherein each rigid ash removal rod section is connected through a hinge connecting section; wherein the bottom of the mounting bolt is fixedly connected with the hinge joint at the uppermost end; the lower part of the rigid ash removing rod section at the lowest end is welded with the ash removing pendulum bob; the shape of the ash removal pendulum bob adopts a streamline design;
the utility model discloses a further improvement lies in: the hinge link type efficient ash removal device is processed by galvanized medium carbon steel or stainless steel with the diameter of 5 mm. Because the hinge link type efficient dust cleaning device needs to meet the hardness and toughness required by swinging. The hinge link type efficient ash removal device is too thin or made of soft materials, so that the hinge link type efficient ash removal device is easy to deform and bend under long-time impact of dust-containing gas; the hinge link type efficient ash removal device is too thick, so that the whole weight of the hinge link type efficient ash removal device 1 is increased, the swinging flexibility of the hinge link type efficient ash removal device is influenced, and meanwhile, the pressure measurement is inaccurate due to the fact that the hinge link type efficient ash removal device occupies spaces in a full-pressure taking pipe and a static pressure taking pipe too much.
The utility model discloses a further improvement lies in: the ash removal pendulum bob is designed in the streamline shape of an ellipsoid; the long shaft of the ash removal pendulum bob is along the axial direction of the corresponding pressure pipe and the short shaft is along the radial direction of the corresponding pressure pipe; wherein the ratio of the long axis to the short axis is 2: 1. The shape of the ash removal pendulum bob needs to ensure that the ash removal pendulum bob not only has enough area impacted by gas, but also can not excessively occupy the space in a full-pressure sampling pipe and a static-pressure sampling pipe to influence measurement. Therefore, the ash removal pendulum bob is designed in the streamline shape of an ellipsoid, so that dust cleaned in the full-pressure tapping pipe and the static-pressure tapping pipe cannot be accumulated on the surface of the ash removal pendulum bob.
If the hinge link type efficient dust cleaning device is too short, the device cannot be effectively driven by airflow in an air duct, and if the device is too long, the rigid dust cleaning rod joint is easy to collide with the edges of a full-pressure tapping port and a static-pressure tapping port, so that the hinge link type efficient dust cleaning device is broken and damaged.
The utility model discloses a further improvement lies in: the ash removal pendulum bob is made of stainless steel and designed to swing under the impact of dry air with the wind speed of 30 m/s. The weight of the ash removal pendulum bob needs to be capable of drawing the upper hinge link type efficient ash removal device to swing freely, the ash removal pendulum bob cannot be too light, otherwise, the ash removal pendulum bob is tightly attached to the inner walls of the full-pressure tapping port and the static-pressure tapping port under the impact of gas and cannot swing; the ash removal pendulum bob also cannot be too heavy, otherwise the impact force of the gas is not enough to enable the ash removal pendulum bob to swing.
The utility model discloses a further improvement lies in: the volume of each ash removal pendulum bob respectively accounts for 6% of the cross section of the pressure opening along the radial direction of the full-pressure tapping pipe and the static-pressure tapping pipe.
The utility model discloses a further improvement lies in: the surface of the ring of the hinge joint is embedded with a plurality of universal wheels, so that the swing is facilitated.
The utility model discloses a theory of operation is: when airflow flows through the air duct, the ash removal pendulum bob is impacted by flowing gas containing dust in the pipeline to generate swinging motion, and the hinge link type efficient ash removal device connected above the ash removal pendulum bob is driven to also irregularly swing. The design of the hinge link rod type efficient ash removal device can improve the swing flexibility and irregularity of the ash removal device, and can effectively clean accumulated dust in the deep inner walls of the full-pressure tapping pipe and the static-pressure tapping pipe and at the full-pressure tapping port and the static-pressure tapping port simultaneously. The length of the hinge link type efficient ash removal device needs to be matched with a full-pressure pipe and a static-pressure pipe so as to achieve the state of the best ash removal effect.
The utility model has the advantages that:
(1) the hinge link rod design of the hinge link rod type efficient ash removal device combines the strong and firm characteristics of the rigid straight rod with the flexible bending characteristics of the hinge connection mode, so that the ash removal device can effectively clean dust at the pressure tapping opening and the inner wall of the pressure measuring pipe in the depth, and the cleaning effect can be improved.
(2) The hinge link type efficient ash removal device adopts a sectional flexible connection design, and the hinge connection joint connects all sections of rigid ash removal rod joints, so that the lower part of the hinge link type efficient ash removal device can freely swing in space by taking the upper part as a shaft point.
(3) The ash removal pendulum bob of the hinge link type efficient ash removal device is designed in a streamline shape of an ellipsoid, so that dust cleaned in a full-pressure tapping pipe and a static-pressure tapping pipe cannot be accumulated on the surface of the ash removal pendulum bob.
(4) The ash removal pendulum bob is designed to flexibly swing under the impact of the dry air with the wind speed of 30 m/s.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an assembly view of the hinge link;
wherein: 1-hinge link type high-efficiency ash removal device, 2-full pressure removal pipe, 3-static pressure removal pipe, 4-air duct, 22-full pressure removal port, 32-static pressure removal port, 11-mounting bolt, 12-rigid ash removal rod joint, 13-hinge connection joint, 13-1-universal wheel, 14-ash removal pendulum bob, 21-full pressure eduction pipe and 31-static pressure eduction pipe.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1-2: in the hinge link type efficient self-cleaning device of the embodiment, the hinge link type efficient ash removal device 1 is respectively arranged in a full-pressure sampling pipe 2 and a static-pressure sampling pipe 3 of an S-shaped Pitot tube type gas flow velocity measurement element; the hinge link type efficient ash removal device 1 is processed by galvanized medium carbon steel or stainless steel with the diameter of 5 mm.
The length of each hinge link type efficient ash removal device 1 penetrates through a full-pressure tapping pipe 2 and a static-pressure tapping pipe 3 respectively and reaches a full-pressure tapping port 22 and a static-pressure tapping port 32, and each hinge link type efficient ash removal device 1 comprises a mounting bolt 11, a plurality of rigid ash removal rod sections 12, a plurality of hinge connection sections 13 and an ash removal pendulum bob 14; a plurality of universal wheels 13-1 are embedded in the surface of the ring of the hinge connecting joint 13.
The upper end of the hinge link type efficient ash removal device is fixedly arranged at the upper parts in the pipelines of the full-pressure sampling pipe 2 and the static pressure sampling pipe 3 by mounting bolts 11 respectively, and the lower end naturally hangs down along the centers of the cross sections of the pipelines of the full-pressure sampling pipe 2 and the static pressure sampling pipe 3; wherein each rigid ash removal rod segment 12 is connected by a hinge connection segment 13; wherein the bottom of the mounting bolt 11 is fixedly connected with the hinge joint 13 at the uppermost end; the ash removal pendulum 14 is welded on the lower part of the rigid ash removal rod section 12 at the lowest end.
The ash removal pendulum bob 14 is designed in the streamline shape of an ellipsoid; the long axis of the ash removal pendulum bob 14 is along the axial direction of the corresponding pressure pipe and the short axis is along the radial direction of the corresponding pressure pipe; wherein the ratio of the long axis to the short axis is 2: 1.
The ash removal pendulum 14 is made of stainless steel and designed to swing under the impact of dry air with the wind speed of 30 m/s. The volume of each ash removal pendulum bob 14 respectively accounts for 6% of the cross section of the pressure opening along the radial direction of the full-pressure sampling pipe 2 and the static-pressure sampling pipe 3.
The implementation is to manufacture 4 ash removal pendulum bob 14 samples with different weights under the guidance of engineering experience and preliminary calculation to carry out wind tunnel test.
The weight of the sample was 20, 50, 80 and 110g, respectively. The hinge link type efficient ash removal device 1 welded with ash removal pendulums 14 with different weights is respectively and sequentially arranged in a full-pressure tapping pipe 2 and a static-pressure tapping pipe 3 and inserted into a wind tunnel test area. And adjusting the wind speed of a wind tunnel test area to be basically stabilized at 30m/s which is common in working conditions in a pipeline, observing the swinging condition of the ash removal pendulum bob 14, and sequentially recording the swinging times and swinging amplitude of the ash removal pendulum bob 14 with different weights in the same test time.
Test results show that the ash removal pendulum bob 14 with the weight of 20 g and 110g can not freely swing basically; the ash removal pendulum bob 14 of 50g and 80g can freely swing, wherein the ash removal pendulum bob 14 with the weight of 50g has more obvious swing amplitude than the ash removal pendulum bob 14 with the weight of 80g, the swing is more flexible, and the swing space range can basically meet the all-dimensional ash removal of the full-pressure sampling pipe 2 and the static pressure sampling pipe 3. As can be seen, the ash removal pendulum 14 preferably weighs about 50 g.
With respect to the geometry of the ash removal pendulum 14, once the optimum weight of the ash removal pendulum 14 is determined after the above weight test, the optimum volume of the ash removal pendulum 14 can also be determined directly. Through the calculation of the volume and the sectional area of the ash removal pendulum bob 14, the optimal volume of the ash removal pendulum bob 14 is respectively 6% of the pressure port cross section along the radial direction of the full-pressure sampling pipe 2 and the static-pressure sampling pipe 3.
In the embodiment, the S-shaped pitot tube type gas flow rate measuring element mainly comprises a full-pressure sampling tube 2 and a static-pressure sampling tube 3. The measuring device elements are inserted into the air duct 4. The air flow in the air duct 4 can be intercepted by the full pressure taking port 22 facing the wind direction and is led out along the full pressure taking pipe through the full pressure leading-out pipe 21. The flow stream intercepted by the static pressure sampling port 32 in the direction opposite to the direction of the air flow without being impacted by the air flow is led out through the static pressure sampling pipe 3 and the static pressure leading-out pipe 31. Therefore, the difference value of the two paths of gas flow pressures can be obtained, and related parameters such as gas flow speed and flow in the flue can be calculated.
Wherein, 2 sets of hinge link type high-efficiency ash cleaning devices 1 are arranged in 1 set of S-shaped pitot tube type gas flow velocity measuring elements and are respectively arranged in a full-pressure tapping pipe 2 and a static-pressure tapping pipe 3. The design of the hinge link type efficient ash removal device 1 adopts a sectional flexible connection design, and the hinge connection joint connects all sections of rigid ash removal rod joints 12 together, so that the lower part of the hinge link type efficient ash removal device 1 can freely swing in space by taking the upper part as an axis point. The ash removal pendulum bob 14 of the hinge link type efficient ash removal device 1 is designed in a streamline shape of an ellipsoid, so that dust cleaned in the full-pressure tapping pipe 2 and the static-pressure tapping pipe 3 cannot be accumulated on the surface of the ash removal pendulum bob.
The design of the hinge link rod type efficient ash removal device 1 can improve the swing flexibility and irregularity of the ash removal device, and can effectively clean the accumulated dust of the full-pressure tapping pipe, the inner wall of the deep part of the static-pressure tapping pipe, the full-pressure tapping port 22 and the static-pressure tapping port 32. The length of the hinge link type efficient ash removal device needs to be matched with the full-pressure pipe 2 and the static-pressure pipe 3 so as to achieve the state of the best ash removal effect.
Claims (6)
1. The utility model provides a high-efficient self-cleaning device of hinge yoke bar formula which characterized in that: the hinge link type efficient ash removal device (1) is respectively arranged in a full-pressure sampling pipe (2) and a static-pressure sampling pipe (3) of the S-shaped Pitot tube type gas flow velocity measuring element; the length of each hinge link type efficient ash removal device (1) penetrates through a full-pressure tapping pipe (2) and a static-pressure tapping pipe (3) respectively and reaches a full-pressure tapping port (22) and a static-pressure tapping port (32), and each hinge link type efficient ash removal device (1) comprises a mounting bolt (11), a plurality of rigid ash removal rod sections (12), a plurality of hinge connection sections (13) and an ash removal pendulum bob (14); the upper end of the hinge link type efficient ash removal device is fixedly arranged at the upper parts in the pipelines of the full-pressure sampling pipe (2) and the static pressure sampling pipe (3) by mounting bolts (11), and the lower end naturally hangs down along the centers of the pipeline sections of the full-pressure sampling pipe (2) and the static pressure sampling pipe (3); wherein each rigid ash removal rod section (12) is connected through a hinge connecting section (13); wherein the bottom of the mounting bolt (11) is fixedly connected with the hinge connecting joint (13) at the uppermost end; the lower part of the rigid ash removing rod section (12) at the lowest end is welded with the ash removing pendulum bob (14); the shape of the ash removal pendulum bob (14) adopts a streamline design.
2. The hinge link type efficient self-cleaning device according to claim 1, wherein: the hinge link type efficient ash removal device (1) is processed by galvanized medium carbon steel or stainless steel with the diameter of 5 mm.
3. The hinge link type efficient self-cleaning device according to claim 1, wherein: the ash removal pendulum bob (14) is designed in a streamline shape of an ellipsoid; the long axis of the ash removal pendulum bob (14) is along the axial direction of the corresponding pressure pipe and the short axis is along the radial direction of the corresponding pressure pipe; wherein the ratio of the long axis to the short axis is 2: 1.
4. The hinge link type efficient self-cleaning device according to claim 1, wherein: the ash removal pendulum (14) is designed to swing under the impact of dry air with the wind speed of 30 m/s.
5. The hinge link type efficient self-cleaning device according to claim 1, wherein: the volume of each ash removal pendulum (14) respectively accounts for 6% of the cross section of the pressure opening along the radial direction of the full-pressure sampling pipe (2) and the static-pressure sampling pipe (3).
6. The hinge link type efficient self-cleaning device according to claim 1, wherein: the surface of the ring of the hinge connecting joint (13) is embedded with a plurality of universal wheels (13-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921653516.0U CN210689748U (en) | 2019-09-30 | 2019-09-30 | Hinge link type efficient self-cleaning device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921653516.0U CN210689748U (en) | 2019-09-30 | 2019-09-30 | Hinge link type efficient self-cleaning device |
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| CN210689748U true CN210689748U (en) | 2020-06-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595559A (en) * | 2019-09-30 | 2019-12-20 | 南京益彩环境科技股份有限公司 | Hinge link type efficient self-cleaning device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595559A (en) * | 2019-09-30 | 2019-12-20 | 南京益彩环境科技股份有限公司 | Hinge link type efficient self-cleaning device |
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