CN212958744U - Node energy consumption device - Google Patents
Node energy consumption device Download PDFInfo
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- CN212958744U CN212958744U CN202021265057.1U CN202021265057U CN212958744U CN 212958744 U CN212958744 U CN 212958744U CN 202021265057 U CN202021265057 U CN 202021265057U CN 212958744 U CN212958744 U CN 212958744U
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- energy dissipation
- node energy
- node
- wear
- conveying pipeline
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Abstract
The utility model discloses a node power consumption device, include: the node energy dissipation element comprises a steel pipe and a wear-resistant layer which is lined on the inner wall of the steel pipe, wherein the inner diameter of the wear-resistant layer is smaller than that of the conveying pipeline; and the connecting joint is used for coaxially connecting the node energy dissipation elements with the conveying pipeline, wherein at least one node energy dissipation element is connected in series between the conveying pipelines. The utility model discloses can consume energy as required and set up pipeline length, internal diameter size, combine operating condition to carry out the combination of establishing ties of a plurality of node energy dissipation component, reach the purpose of consuming energy as required. Adopt slot type articulate, convenient to detach and installation can also play absorbing effect simultaneously.
Description
Technical Field
The utility model relates to a mine conveyor technical field, specifically speaking relates to node power consumption device.
Background
The filling system provides the capability of pushing slurry to flow forwards in the pipeline by depending on the self weight of the slurry in the vertical pipe section. During the forward flowing process of the slurry, the friction of the pipe wall forms resistance, and the power is consumed, so that the energy of the system is balanced. The prior commonly used energy dissipation orifice plate (ZL 200920107180.8) and energy consumption anti-blocking valve (ZL201620257499.9)
As shown in fig. 1, the energy dissipating orifice plate comprises an energy dissipating orifice plate body 1, a wear-resistant member 2, and the wear-resistant member 2 is bonded to the orifice plate body 1 with an adhesive. The energy dissipation pore plate is connected with two mounting flanges 3 of the pipeline through a stud bolt 4 and a nut 5, so that the energy dissipation pore plate is mounted in the pipeline, and the wear-resistant part can be made of a wear-resistant ceramic matrix composite material. It has the following disadvantages:
(1) the requirement on the material of the pore plate is high, the situation that the pressure of filling slurry is more than 15MPa is common for deep well filling mines, and the short and thin pore plate has small deformation resistance and is easy to deform;
(2) the pore plate is clamped and fixed in the pipeline by flanges at two sides, so that the installation labor intensity is high, and the pore plate is easy to wash and fall off along with the further increase of fluid energy;
(3) the wear-resistant layer made of the wear-resistant ceramic matrix composite is bonded on the energy dissipation orifice plate main body by adopting an adhesive, is thin and short in service life, and is easy to fall into slurry to cause pipe blockage accidents.
As shown in fig. 2, the energy consumption anti-blocking valve is composed of a first short pipe 6, a second short pipe 8 and a connecting pipe 7. Wherein the cross sectional area of the second short pipe 8 is unequal to the area of the first short pipe 6, the connecting pipe 7 is a reducing short pipe, the cross sectional area of the joint of the connecting pipe and the first short pipe 6 is equal to that of the first short pipe 6, the cross sectional area of the joint of the connecting pipe and the second short pipe 8 is equal to that of the second short pipe 8, and the connecting pipe 7 adopts a flexible quick joint. The energy-consumption anti-blocking valve achieves the purpose of energy dissipation through reducing the diameter of the connecting pipe and is not suitable for being embedded in the horizontal straight pipe.
SUMMERY OF THE UTILITY MODEL
For solving the above problem, the utility model provides a node power consumption device, include:
the node energy dissipation element comprises a steel pipe and a wear-resistant layer which is lined on the inner wall of the steel pipe, wherein the inner diameter of the wear-resistant layer is smaller than that of the conveying pipeline;
a connecting joint for coaxially connecting the node energy dissipation element and the conveying pipeline,
wherein, at least one node energy consumption element is connected in series between the conveying pipelines.
Preferably, the connection joint is a groove type joint, the groove type joint comprises a shell, a sealing ring, a hexagon bolt and a spring washer, the shell comprises a pair of semicircular rings, each semicircular ring extends out of an annular clamping body along the axial two sides along the radial direction, annular clamping grooves are formed in the outer walls of the steel pipe and the conveying pipeline, the annular clamping bodies are respectively embedded into the corresponding annular clamping grooves through buckling of the pair of semicircular rings, the pair of semicircular rings are fixedly connected through the hexagon bolt and the spring washer, and the node energy dissipation element is connected with the conveying pipeline.
Preferably, the connecting joint is a flange.
Preferably, the wear resistant layer is lined on the inner wall of the steel pipe by a centrifugal casting apparatus or a self-propagating synthesis apparatus.
Preferably, the wear resistant layer is made of a ceramic composite or a bimetallic wear resistant material.
Preferably, the node dissipative element has an inner diameter smaller than the inner diameter of the transport conduit.
Preferably, a plurality of node energy consumption elements are arranged in series at intervals with the conveying pipeline.
The utility model discloses a node power consumption device has following technological effect:
(1) the node energy dissipation elements adopt small short pipes with small inner diameters and wear-resistant layers, the length and the inner diameter of the pipeline can be set according to energy consumption requirements in the actual application process, and the plurality of node energy dissipation elements are combined in series in combination with actual working conditions, so that the aim of dissipating energy according to requirements is fulfilled finally;
(2) adopt slot type articulate, convenient to detach and installation can also play absorbing effect simultaneously.
(3) For a filling pipeline conveying system with more energy to be dissipated, a plurality of node energy dissipation elements can be connected in series.
(4) Quantitative energy consumption, namely, the targeted design of the energy consumption elements according to the energy consumption requirements is provided, which is reflected in the length of the energy consumption elements and the change of the inner diameter of the energy consumption elements.
(5) The node energy dissipation element adopts an alloy wear-resistant material and is a wear-resistant layer formed by a centrifugal casting process, so that the service life is long, and the node energy dissipation element is not easy to fall off;
(6) node energy dissipation elements can be embedded between the horizontal pipes, and horizontal energy dissipation and pressure reduction are achieved.
Drawings
The above features and technical advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments thereof, taken in conjunction with the accompanying drawings.
Figure 1 is a schematic diagram showing an energy dissipating orifice plate;
FIG. 2 is a schematic diagram showing an energy consuming anti-clog valve;
fig. 3 is a longitudinal sectional view showing a node energy consuming device according to an embodiment of the present invention;
fig. 4 is a transverse sectional view showing a node energy consumption device according to an embodiment of the present invention.
Fig. 5 is a schematic diagram showing the arrangement of a plurality of node energy dissipation elements and a transmission pipeline in spaced series according to an embodiment of the present invention.
Detailed Description
Embodiments of the node energy consumption device according to the present invention will be described below with reference to the accompanying drawings. Those of ordinary skill in the art will recognize that the described embodiments can be modified in various different ways, or combinations thereof, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in the present description, the drawings are not to scale and like reference numerals refer to like parts.
The node energy consumption device comprises one or more node energy consumption elements connected between the conveying pipelines, as shown in fig. 3 and 4, one node energy consumption element 12 is connected between two conveying pipelines 10, and the conveying pipelines 10 comprise steel pipes 121 for conveying slurry. The node energy dissipation element 12 comprises a steel pipe 121 and a super wear-resistant layer 122 lined inside, and a firm combination is formed through a centrifugal casting process and a self-propagating synthesis technology. The node energy dissipation elements 12 are connected between the conveying pipelines 10 through the connecting joints 11, can be connected through groove type joints, and can be connected by traditional high-pressure flange plates when the pressure bearing capacity exceeds a certain value (the pressure which cannot be borne by the groove type joints is generally more than 15MPa and is determined according to the actual working conditions of different mines).
The groove type joint mainly comprises a high-strength shell, a sealing ring, a high-strength inner hexagon bolt, a spring washer and the like. The shell comprises a pair of semicircular rings, each semicircular ring extends out of an annular clamping body 111 along the axial two sides along the radial direction, annular clamping grooves 101 are formed in the outer walls of the steel pipe and the conveying pipeline, the annular clamping bodies 111 are respectively embedded into the corresponding annular clamping grooves 101 through buckling of the pair of semicircular rings, the pair of semicircular rings are fixedly connected through hexagonal bolts and spring washers, and the node energy dissipation elements are connected with the conveying pipeline. The joint can be designed into a rigid joint or a flexible joint according to actual requirements, and the rigidity or flexibility of the joint is realized by utilizing the adjustment of the key diameter of the shell so as to meet the requirements of different conveying pipelines. The joint adopts a high-strength inner hexagon bolt, and is directly fixed on the shell, so that the joint is ensured to bear high pressure in the pipeline. The high strength bolts also increase the rigidity of the joint housing connection, thereby increasing the bending moment that the joint is subjected to. The sealing ring realizes triple sealing, and ensures the reliability of joint sealing.
When the high-pressure flange is connected, the end part of the node energy dissipation element is welded with the high-pressure flange firstly, and then at least 8 high-strength bolts are adopted to connect the pipeline flange. Both high pressure flange connections and groove joints are well established in the art and will not be described in detail herein.
The wear resistant layer 122 may be made of a ceramic composite, bimetal, or other wear resistant material. As can be seen in fig. 3, the node dissipative element 12 has an inner diameter D2. The inner diameter D1 of the transfer pipe 10 is larger than the inner diameter D2 of the node energy consumption elements, and the value and length L of D1/D2 influence the decompression level of the node energy consumption devices.
The filling system provides the capability by depending on the self weight of slurry in the vertical pipe section to push the slurry to flow forwards in the pipeline, and in the process of forward flow of the slurry, the wall of the pipe is rubbed to form resistance, so that the power is consumed, and the energy of the system is balanced. The on-way resistance of the pipeline is related to factors such as pipe diameter, pipe length, flow, concentration and the like. Aiming at overlarge residual water head, the friction resistance loss is increased, so that the residual water head can be effectively reduced, and the purpose of energy balance of the system is achieved. By using the principle of local loss of pipeline pressure, the relationship between the hydraulic gradient of the pipeline and the diameter of the pipeline is shown in formula 1:
in the formula, i is the hydraulic gradient and the unit is Pa/m;
v is the working flow velocity of the slurry in m/s;
q is the slurry flow rate in m3/s；
λ is the coefficient of on-way resistance;
d is the inner diameter of the conduit through which the slurry flows.
For node energy consumption elements, after the inner diameter D2 of the node energy consumption element is determined, the hydraulic gradient i of the node energy consumption element can be obtained according to the formula 12According to the length L of the node energy consumption element, the frictional resistance loss can be determined, and the formula of the frictional resistance loss J is as follows:
J＝i2×L (3)。
in addition, the ratio of the hydraulic gradient of the node energy dissipation element 12 to the conveying pipeline 10 is
i1Is the hydraulic slope of the delivery conduit;
i2is the hydraulic slope of the nodal dissipative element;
d1 is the inner diameter of the conveying pipeline;
d2 is the inner diameter of the node dissipative element.
The wall thickness of the steel pipe 121 of the node energy dissipation element 12 should be calculated according to the pressure bearing capacity of the pipeline, and in order to reduce the cost, the wall thickness of the steel pipe 121 can be appropriately increased, and the thickness of the wear-resistant layer 122 can be reduced.
For some conveying pipelines, one node energy dissipation element 12 cannot meet the energy dissipation requirement, and as shown in fig. 5, a plurality of node energy dissipation elements are connected in series between each section of conveying pipeline according to the requirement, so as to achieve the purpose of series energy dissipation. The node energy dissipation elements can be connected in series between two conveying pipelines without intervals, or connected between a plurality of conveying pipelines with intervals.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A nodal energy dissipation device, comprising:
the node energy dissipation element comprises a steel pipe and a wear-resistant layer which is lined on the inner wall of the steel pipe, wherein the inner diameter of the wear-resistant layer is smaller than that of the conveying pipeline;
a connecting joint for coaxially connecting the node energy dissipation element and the conveying pipeline,
wherein, at least one node energy consumption element is connected in series between the conveying pipelines.
2. The node energy consumption device according to claim 1, wherein the connection joint is a groove joint, the groove joint comprises a housing, a sealing ring, a hexagon bolt and a spring washer, the housing comprises a pair of semicircular rings, each semicircular ring extends out of an annular clamping body along both axial sides in the radial direction, annular clamping grooves are formed in the outer walls of the steel pipe and the conveying pipeline, the pair of semicircular rings are buckled, so that the annular clamping bodies are respectively embedded into the corresponding annular clamping grooves, and the pair of semicircular rings are fixedly connected through the hexagon bolt and the spring washer to connect the node energy consumption element with the conveying pipeline.
3. The nodal energy dissipation device of claim 1, wherein said connection joint is a flange.
4. The nodal energy dissipation device of claim 1, wherein the wear resistant layer is lined on the inner wall of the steel pipe by centrifugal casting equipment or self-propagating synthesis.
5. The nodal energy dissipation device of claim 1,
the wear-resistant layer is made of a ceramic composite material or a bimetal wear-resistant material.
6. The nodal energy dissipation device of claim 1,
the inner diameter of the node energy dissipation element is smaller than that of the conveying pipeline.
7. The nodal energy dissipation device of claim 1,
a plurality of node energy dissipation elements are arranged in series at intervals with the conveying pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021265057.1U CN212958744U (en) | 2020-07-01 | 2020-07-01 | Node energy consumption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021265057.1U CN212958744U (en) | 2020-07-01 | 2020-07-01 | Node energy consumption device |
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| Publication Number | Publication Date |
|---|---|
| CN212958744U true CN212958744U (en) | 2021-04-13 |
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| CN202021265057.1U Active CN212958744U (en) | 2020-07-01 | 2020-07-01 | Node energy consumption device |
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