CN112605076B - non-Newtonian fluid valve blockage cleaning mechanism and application thereof in shield tunneling machine - Google Patents
non-Newtonian fluid valve blockage cleaning mechanism and application thereof in shield tunneling machine Download PDFInfo
- Publication number
- CN112605076B CN112605076B CN202011346949.9A CN202011346949A CN112605076B CN 112605076 B CN112605076 B CN 112605076B CN 202011346949 A CN202011346949 A CN 202011346949A CN 112605076 B CN112605076 B CN 112605076B
- Authority
- CN
- China
- Prior art keywords
- rod
- newtonian fluid
- section
- valve
- fluid valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
- B08B7/026—Using sound waves
- B08B7/028—Using ultrasounds
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Abstract
The invention relates to a non-Newtonian fluid valve blockage cleaning mechanism and application thereof in a shield tunneling machine. The non-Newtonian fluid valve blockage cleaning mechanism is installed at the input end/output end of the existing mud valve, the vibration force and the driving force are generated, the dredging operation can be performed on the pipeline corresponding to the input end/output end of the mud valve, and the dredging effect is good. The non-Newtonian fluid valve blockage cleaning mechanism is simple and convenient to install and operate with an existing slurry valve, the structure of the existing slurry valve cannot be changed at all, the existing slurry valve can meet the relevant national standards, and the implementation effect is good.
Description
Technical Field
The invention relates to a non-Newtonian fluid valve blockage cleaning mechanism and application thereof in a shield tunneling machine, belonging to the technical field of valves.
Background
The slurry type shield machine stabilizes an excavation surface by pressurizing slurry or slurry, a sealing clapboard is arranged behind a cutter head of the slurry type shield machine, a slurry chamber is formed between the cutter head and the excavation surface, the slurry is filled in the slurry chamber, and excavation soil and the slurry are mixed and conveyed to the outside of a tunnel by a slurry pump for separation.
In the piping of a slurry shield machine, a large number of slurry valves are generally used. The existing slurry valve is a valve structure commonly used in a slurry pipeline system of a shield machine due to the characteristic of good circulation. The medium of the shield machine system is slurry, so that the requirement on the performance of the valve is high.
When the existing slurry valve is applied to a shield machine, the inner wall of the slurry valve is easy to adhere and leave a large amount of slurry sundries, and when the slurry valve is accumulated for a long time, the inner part of the slurry valve is easy to block, so that the conveying efficiency of the slurry valve is influenced; if a blockage occurs, it can make it difficult for the valve seat to close, resulting in seal leakage; in addition, once blockage occurs, the working environment of the shield tunneling machine is severe, and the maintenance cost is high.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a non-Newtonian fluid valve blockage cleaning mechanism and application thereof in a shield tunneling machine, and the specific technical scheme is as follows:
the non-Newtonian fluid valve blockage cleaning mechanism comprises a circular tubular straight pipe body, an inclined pipe which is obliquely arranged, a vibrating plate which is arranged at the tail end of the inclined pipe, an ultrasonic transducer which is used for driving the vibrating plate to vibrate, and a plurality of vibrating rods which are distributed in an array manner, wherein flanges are fixedly arranged at two ends of the straight pipe body respectively, and the flanges are connected with the end part of the straight pipe body into a whole; the side wall of the straight pipe body is provided with a mounting hole communicated with the head end of the inclined pipe, the edge of the vibrating plate is hermetically connected with the tail end of the inclined pipe, and the ultrasonic transducer is fixedly mounted on the outer side of the vibrating plate; the vibrating rod comprises an inclined rod section and a transverse rod section, the inclined rod section is parallel to the axial direction of the inclined tube, the transverse rod section is parallel to the axial direction of the straight tube body, the tail end of the inclined rod section is arranged inside the inclined tube, the tail end of the inclined rod section is fixedly connected with the vibrating plate, the head end of the inclined rod section is arranged inside the straight tube body, the head end of the inclined rod section is connected with the tail end of the transverse rod section into a whole, and the head end of the transverse rod section is arranged outside the straight tube body; the inclined tube is characterized in that a plurality of medium balls are further filled in the inclined tube, a grid used for preventing the medium balls from overflowing out of the inclined tube is arranged at the mounting hole, the edge of the grid is fixedly connected with the hole wall of the mounting hole, and a grid structure for the inclined rod section to penetrate through and move is arranged on the grid.
According to the technical scheme, the outer side of the flange is provided with the circular ring-shaped accommodating groove, and the cross section of the accommodating groove is of an arc-shaped structure.
According to the technical scheme, the side edge of the flange is provided with the circular through holes, and the through holes are formed in the periphery of the accommodating groove.
According to the further optimization of the technical scheme, the cross section of the inclined rod section is circular, the transverse rod section consists of a first rod part with an oval cross section and a second rod part which is coaxially arranged with the first rod part, the tail end of the first rod part is connected with the head end of the inclined rod section into a whole, the head end of the first rod part is connected with the tail end of the second rod part into a whole, the cross section of the tail end of the second rod part is oval, and the cross section of the head end of the second rod part is rhombic; the cross-sectional area of the second rod portion decreases continuously from the trailing end of the second rod portion to the leading end of the second rod portion; from the tail end of the second rod part to the head end of the second rod part, the oval structure of the side wall of the second rod part and the diamond structure of the side wall of the second rod part are in smooth transition.
According to the further optimization of the technical scheme, the lengths of the inclined rod sections are equal, and the lengths of the transverse rod sections are equal.
According to the further optimization of the technical scheme, the lengths of the inclined rod sections are equal, and the curved surface formed by arranging the head ends of the transverse rod sections outside the straight pipe body is of a spherical crown structure.
According to the further optimization of the technical scheme, the frequency of the ultrasonic transducer during working is 17-43 kHz.
According to the further optimization of the technical scheme, the length direction of the diagonal rod section is perpendicular to the plate surface of the vibrating plate.
The non-Newtonian fluid valve blockage cleaning mechanism is applied to a shield machine as a mud valve fitting.
According to the further optimization of the technical scheme, the non-Newtonian fluid valve blockage cleaning mechanism is installed at the input end or the output end of the mud valve, and the fluid passing through the inside of the mud valve is the non-Newtonian fluid.
The invention has the beneficial effects that:
1) the non-Newtonian fluid valve blockage cleaning mechanism is installed at the input end/output end of the existing slurry valve, the non-Newtonian fluid valve blockage cleaning mechanism generates vibration force and driving force, dredging operation can be conducted on the pipeline corresponding to the input end/output end of the slurry valve, even if the pipeline is blocked inside, dredging operation can be completed only by starting the non-Newtonian fluid valve blockage cleaning mechanism, the dredging effect is good, the purpose of blockage prevention is finally achieved, maintenance and repair cost is obviously reduced, and application value is high.
2) The installation and operation between the non-Newtonian fluid valve blockage cleaning mechanism and the existing slurry valve are simple and convenient, the structure of the existing slurry valve can not be changed at all, the existing slurry valve can meet the relevant standards of the existing country, and the implementation effect is good.
Drawings
FIG. 1 is a schematic diagram of a non-Newtonian fluid valve blockage clearing mechanism of the present invention;
FIG. 2 is a schematic view of the connection of the non-Newtonian fluid valve blockage clearing mechanism of the present invention to a conventional mud valve;
FIG. 3 is a schematic view of the vibrating rod according to the present invention;
FIG. 4 is a schematic view of a projected arrangement of a first post of the present invention in a cross-section of an input tube;
FIG. 5 is a schematic view of the projection arrangement of a second post of the present invention on the cross section of the output tube;
FIG. 6 is a schematic structural view of a crossbar segment according to the present invention;
FIG. 7 is a schematic structural view (top view) of a crossbar segment according to the present invention;
FIG. 8 is a schematic view of a second rod portion according to the present invention;
FIG. 9 is a schematic structural view (side view) of the second rod portion of the present invention;
FIG. 10 is a schematic view of the structure of the media sphere of the present invention;
FIG. 11 is a schematic structural view of a flange according to the present invention;
fig. 12 is a schematic view of the first valve in embodiment 6.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1, the non-newtonian fluid valve blockage clearing mechanism includes a circular tube-shaped straight tube 11, an inclined tube 21 disposed in an inclined manner, a vibrating plate 22 mounted at a tail end of the inclined tube 21, an ultrasonic transducer 23 for driving the vibrating plate 22 to vibrate, and a plurality of vibrating rods 30 distributed in an array manner, wherein flanges 13 are respectively fixedly mounted at two ends of the straight tube 11, and the flanges 13 are integrally connected with end portions of the straight tube 11; the side wall of the straight pipe body 11 is provided with a mounting hole communicated with the head end of the inclined pipe 21, the edge of the vibrating plate 22 is hermetically connected with the tail end of the inclined pipe 21, and the ultrasonic transducer 23 is fixedly mounted on the outer side of the vibrating plate 22; the vibrating rod 30 comprises a diagonal rod section 31 and a transverse rod section 32, wherein the diagonal rod section 31 is arranged in parallel with the axial direction of the diagonal tube 21, the transverse rod section 32 is arranged in parallel with the axial direction of the straight tube body 11, the tail end of the diagonal rod section 31 is arranged in the diagonal tube 21, the tail end of the diagonal rod section 31 is fixedly connected with the vibrating plate 22, the head end of the diagonal rod section 31 is arranged in the straight tube body 11, the head end of the diagonal rod section 31 is connected with the tail end of the transverse rod section 32 into a whole, and the head end of the transverse rod section 32 is arranged outside the straight tube body 11; the interior of the inclined tube 21 is further filled with a plurality of medium balls 25, a grid 24 used for preventing the medium balls 25 from overflowing the inclined tube 21 is arranged at the mounting hole, the edge of the grid 24 is fixedly connected with the hole wall of the mounting hole, and the grid 24 is provided with a grid structure for the inclined rod section 31 to penetrate through and move.
As shown in fig. 2, the prior art mud valve includes a valve body 10. The non-Newtonian fluid valve blockage cleaning mechanism is mounted between the input end and the output end of the valve body 10. For the convenience of installation, as shown in fig. 1, 2 and 11, the side of the flange 13 is provided with a plurality of circular through holes 14, and the through holes 14 are all arranged at the periphery of the accommodating groove 15. The through holes 14 are bolted for subsequent installation of bolts therethrough.
The non-Newtonian fluid valve blocks up clearance mechanism and can be used for the input and the output of mediation current mud valve, non-Newtonian fluid valve blocks up the vibration power and the motive force that clearance mechanism produced the input and the output that are used in the mud valve, non-Newtonian fluid valve blocks up the input and the output of clearance mechanism to the mud valve and carries out the mediation operation through vibration power and motive force, finally reaches the purpose of preventing blockking up.
In the use process of the non-Newtonian fluid valve blockage cleaning mechanism, slurry enters the input end of the slurry valve from the first straight pipe body 11, passes through the valve seat and the output end of the slurry valve, and finally flows out of the second straight pipe body 11, and the flow direction of the slurry is shown by a hollow arrow in figure 2.
When the non-Newtonian fluid valve blockage cleaning mechanism is used, the frequency of the ultrasonic transducer 23 in the working process is 17-43kHz, the vibration plate 22 is made of a stainless steel plate, and the vibration plate 22 can generate a large amount of ultrasonic waves facing the interior of the inclined tube 21 under the driving of the ultrasonic transducer 23; because the length direction of the diagonal rod section 31 is vertical to the plate surface of the vibration plate 22, part of the vibration wave generated by the vibration plate 22 can be directly transmitted to the diagonal rod section 31, and because of the existence of the medium ball 25, the medium ball 25 can transmit most of the residual wave to the diagonal rod section 31, so that the diagonal rod section 31 is promoted to vibrate at high frequency; since the mud is a non-Newtonian fluid, the mud will pass through the mesh spaces of the grid 24 into the interior of the down tube 21, and the mud will wrap the media balls 25 and the portion of the down tube segments 31 located inside the down tube 21; the mud can move violently under the high-frequency vibration of the inclined rod section 31 and the medium ball 25, and the mud is used as non-Newtonian fluid, can suspend in the air and do irregular motion under the condition of high-frequency vibration, can effectively transfer vibration, and effectively transfer the vibration to the inner cavity of the straight pipe body 11 or the inner cavity of the output pipe 12; compared with Newtonian fluid, the non-Newtonian fluid is not easy to generate a large amount of bubbles during high-frequency vibration.
The grid 24 plays a role of bearing on one hand, and reduces the weighing pressure to which the vibrating plate 22 is subjected; on the other hand, the grid 24 can also effectively block the medium ball 25 from overflowing into the inner cavity of the straight pipe body 11 or the inner cavity of the output pipe 12.
Further, as shown in fig. 4 to 9, the cross section of the sway rod section 31 is circular, the sway rod section 32 is composed of a first rod part 321 with an oval cross section and a second rod part 322 coaxially arranged with the first rod part 321, the tail end of the first rod part 321 is integrally connected with the head end of the sway rod section 31, the head end of the first rod part 321 is integrally connected with the tail end of the second rod part 322, the cross section of the tail end of the second rod part 322 is oval, and the cross section of the head end of the second rod part 322 is diamond-shaped; the cross-sectional area of the second rod portion 322 decreases continuously from the trailing end of the second rod portion 322 to the leading end of the second rod portion 322; the oval configuration of the side wall of second rod portion 322 transitions smoothly from the trailing end of second rod portion 322 to the leading end of second rod portion 322 with the diamond configuration of the side wall of second rod portion 322.
The cross rod section 32 corresponding to the first straight pipe body 11 is a first sighting rod 33p, the first sighting rod 33p is installed near the input end of the slurry valve, the first sighting rod 33p is arranged in a multi-circle concentric circle structure in the projection of the cross section of the straight pipe body 11, a perpendicular line between the circle center of a concentric circle formed by the first sighting rod 33p and the axis of the first sighting rod 33p is a first perpendicular line, an included angle between the first perpendicular line and the long axis of the first sighting rod 33p peripheral elliptical structure is 100 degrees, and a diagonal line of the first sighting rod 33p peripheral diamond structure and the long axis of the first sighting rod 33p peripheral elliptical structure are arranged in a collinear mode; the horizontal pole section 32 corresponding to the second straight pipe body 11 is a second sighting pole 32n, the second sighting pole 32n is installed near the output end of the slurry valve, the projection of the second sighting pole 32n on the cross section of the output pipe 12 is arranged into a multi-circle concentric circle structure, the perpendicular line between the circle center of the concentric circle formed by the second sighting pole 32n and the axis of the second sighting pole 32n is a second perpendicular line, the included angle between the second perpendicular line and the long axis of the second sighting pole 32n periphery elliptical structure is 80 degrees, and the collinear arrangement is formed between the diagonal line of the second sighting pole 32n periphery rhombus structure and the long axis of the second sighting pole 32n periphery elliptical structure.
Further, the length of the first rod part 321 is a, the length of the second rod part 322 is b, and b/a is more than or equal to 2.3 and less than or equal to 2.6.
First, the cross section of the tail end of the second rod 322 in the cross rod section 32 is oval, and the cross section of the head end of the second rod 322 is diamond; the cross-sectional area of the second rod portion 322 decreases continuously from the trailing end of the second rod portion 322 to the leading end of the second rod portion 322; according to the supplementary high-frequency vibration of mechanics principle, the second pole portion 322 of this structure can turn into the vibrational force of vibration from top to bottom and promote or stir its effort all around to make the inside mud of straight body 11 advance forward, the vibrational force is assisted to the driving force, even there is the jam in straight body 11 department, also can dredge fast, dredge effectually.
Second, the elliptical configuration of the side wall of second rod section 322 smoothly transitions from the trailing end of second rod section 322 to the leading end of second rod section 322, which facilitates reducing the drag of the slurry flow.
The cross section of first pole portion 321 is the ellipse, and the contained angle that adds between the major axis of first perpendicular and the elliptic structure of a 33p periphery of sighting rod is 100, and the contained angle that adds between the major axis of the elliptic structure of second perpendicular and two 32n peripheries of sighting rod is 80, and the concentric circles structure sets up, and this makes mud can take place to stir in the inside of straight tube 11, and the direction of stirring is opposite setting, and this is favorable to the inside mud of furthest's straight tube 11 to be the offset setting in the process of stirring, thereby further reduces the probability that the jam takes place. However, if the first rod 321 is a round rod, the above effect is not obtained. The first rod 321 is a transition member, and a large amount of vibration force is converted into pushing force mainly by the second rod 322, so the specific length of the first rod 321 must be strictly limited.
The axis of the inclined tube 21 and the axis of the straight tube body 11 form an included angle, and the inclined tube 21 and the straight tube body 11 are connected into a whole. In addition, the head end of the crossbar section 32 is arranged outside the straight pipe body 11, so that the head end of the crossbar section 32 after installation can extend into the input/output end of the mud valve, and the input/output end of the mud valve can be conveniently dredged.
Example 2
In order to further improve the sealing performance, as shown in fig. 11, an annular receiving groove 15 is provided on an outer side of the flange 13, and a cross section of the receiving groove 15 has an arc-shaped structure. An O-ring is mounted in the receiving groove 15 to improve sealing performance.
The non-Newtonian fluid valve blockage cleaning mechanism is simple and convenient to install and operate with an existing slurry valve, the structure of the existing slurry valve cannot be changed at all, the existing slurry valve can meet the relevant national standards, and the implementation effect is good.
Example 3
Based on the embodiment 2, as shown in fig. 2, the included angle between the length direction of the diagonal rod section 31 and the length direction of the transverse rod section 32 is alpha, and alpha is more than or equal to 120 degrees and less than or equal to 135 degrees. And also defines the angle between the axis of the inclined tube 21 and the axis of the straight tube body 11. Through a plurality of tests, the angle range is found, and the axial resistance in the straight pipe body 11 can be reduced to the maximum extent.
Example 4
Based on embodiment 3, as shown in fig. 10, the medium ball 25 comprises a hollow metal ball shell 251, a solid core ball 252 is arranged inside the hollow metal ball shell 251, and the diameter of the solid core ball 252 is less than one half of the inner diameter of the hollow metal ball shell 251.
Due to the rod spacing between the swash rod segments 31, the outer diameter of the hollow metal spherical shell 251 is less than or equal to 10mm, the thickness of the hollow metal spherical shell 251 is 1.5 ± 0.1mm, and the diameter of the solid core ball 252 is less than 2.5 mm. The hollow metal ball shell 251 is made of stainless steel, and the solid core ball 252 is made of a lead ball.
The solid sphere is more susceptible to mechanical vibrations than if the media sphere 25 were a solid sphere. However, in the hollow metal spherical shell 251 in the medium ball 25 of the present invention, when the hollow metal spherical shell 251 transmits the mechanical vibration, the hollow metal spherical shell 251 can drive the hollow metal spherical shell 251 therein to move irregularly, and the hollow metal spherical shell 251 can continuously impact the hollow metal spherical shell 251 in the irregular movement process, so that a large amount of medium and low frequency vibration with smaller amplitude can be generated; compared with high-frequency ultrasonic vibration with high amplitude, the low-medium frequency vibration with small amplitude is beneficial to widening the frequency spectrum, so that resonance of certain components in the slurry can be greatly improved, and the probability of blockage of the slurry in a pipeline is remarkably reduced.
Example 5
Based on the embodiment 4, the length of each inclined rod section 31 is equal, and the length of each transverse rod section 32 is equal; this allows the crossbar section 32 to maximize the pushing force inside the straight pipe body 11, and the forward pushing force can maximize the space inside the straight pipe body 11, thereby helping to prevent the mud valve input from being blocked.
The length of each inclined rod section 31 is equal, and the curved surface formed by arranging the head ends of the transverse rod sections 32 in the output pipe 12 is of a spherical crown structure. The arrangement of the spherical crown structures can not exert the maximum driving force, but the closer to the pipe wall, the larger the resistance, and the arrangement of the spherical crown structures can ensure that the fluid discharge of the cross rod section 32 in the pipeline where the output end of the slurry valve is positioned is more uniform, thereby further improving the dredging effect.
Example 6
Valve blockage characterization test I
Step 1.1, mixing starch and water according to a mass ratio of 2.6:1 to prepare a starch material, wherein the starch material is a non-Newtonian fluid like mud and can be used for simulating the mud. The starch material is temporarily stored in the storage tank.
Step 1.2, communicating the straight pipe body 11 with a special sludge pump for a filter press, and conveying starch materials in the storage tank to a metal pipeline 50 by using the special sludge pump for the filter press, wherein the metal pipeline 50 is communicated with the straight pipe body 11 as shown in fig. 12. A sampling groove is arranged below the output end of the slurry valve,the sampling tank can be used to receive material discharged from the mud valve output. In the test, a non-Newtonian fluid valve blockage cleaning mechanism is not installed at the output end of the slurry valve; the mud valve is simply called valve one. Wherein the empty sampling slot has a mass m0。
The special sludge pump for the filter press adopts WQP type produced by Hangzhou excellence pump industry Co., Ltd, and has a rated flow of 10m3H, the lift is 10m, and the rated power is 1.75 kw.
Step 1.3, starting a sludge pump special for the filter press to operate at rated power, and fully opening a first valve; the starch material passes through the metal pipeline 50 and the straight pipe body 11 in sequence and is finally discharged from the output end of the valve I. And (4) receiving the discharged materials by using a sampling groove for 2 minutes to finish sampling.
Step 1.4, weighing the materials received by the sampling groove to obtain the total mass m1. At this time, the mass of the starch material discharged when not clogged was m1-m0。
Step 1.5, heating the metal pipeline 50 by using an electromagnetic induction heating device (such as an electromagnetic coil), wherein the heating part is close to the straight pipe body 11 and is heated to 90-95 ℃ for 5 minutes; repeating the step 1.3 and the step 1.4 to finally obtain the product with the total mass m2The sampling groove of (1).
Since starch is gelatinized by heating at a high temperature, a large amount of starch is stuck to the vicinity of the straight tube body 11. When the sludge pump special for the filter press is started, the partially gelatinized starch material is pushed to the inside of the straight pipe body 11. The gelatinized starch material can be used to simulate a blockage situation inside the first valve.
When the fluid inside the valve-I is non-Newtonian, the blockage rate lambda of the inside of the valve-I1＝[(m1-m0)-(m2-m0)]/(m1-m0)＝(m1-m2)/(m1-m0). Thus, three measurements were made, and the results are shown in Table 1.
Valve blockage characterization test II
And 2.1, storing pure water in the storage tank.
Step 2.2, pressure utilizationThe special sludge pump of filter carries the inside pure water of stock chest to metal pipeline 50, and metal pipeline 50 communicates with straight tube 11. In the test, a non-Newtonian fluid valve blockage cleaning mechanism is not arranged at the output pipe 12; the mud valve is simply called valve one. Wherein the empty sampling slot has a mass m0。
The special sludge pump for the filter press adopts WQP type produced by Hangzhou excellence pump industry Co., Ltd, and has a rated flow of 10m3H, the lift is 10m, and the rated power is 1.75 kw.
Step 2.3, starting a sludge pump special for the filter press to operate at rated power, and fully opening a first valve; the pure water passes through the metal pipeline 50, the straight pipe body 11 and the output end of the first valve in sequence, and is finally discharged from the output end of the first valve. And (4) receiving the discharged materials by using a sampling groove for 2 minutes to finish sampling.
Step 2.4, weighing the materials received by the sampling groove to obtain the total mass m3. At this time, the mass of pure water discharged when not clogged was m3-m0。
Step 2.5, heating the metal pipeline 50 by using an electromagnetic induction heating device (such as an electromagnetic coil), wherein the heating part is close to the straight pipe body 11 and is heated to 90-95 ℃ for 5 minutes; repeating the step 2.3 and the step 2.4 to finally obtain the product with the total mass m4The sampling groove of (1).
When the fluid inside the valve-I is Newtonian, the blockage rate lambda of the inside of the valve-I2＝(m3-m4)/(m3-m0). Thus, three measurements were made, and the results are shown in Table 1. Since pure water does not gelatinize even when heated, the inside thereof is not easily clogged, and there may be a part of lambda due to a measurement error before and after the heating, etc2Is negative.
Valve blockage characterization test III
In valve blockage characterization test one, step 1.5 was modified to: heating the metal pipeline 50 by using an electromagnetic induction heating device (such as an electromagnetic coil), wherein the heating part is close to the straight pipe body 11 and is heated to 90-95 ℃ for 5 minutes; starting the non-Newtonian fluid valve blockage cleaning mechanism, and repeating the step 1.3 and the step1.4, the rate of clogging lambda of the interior of the valve I is finally obtained3The results are shown in Table 1.
Valve blockage characterization test four
In the second valve blockage characterization test, step 2.5 was modified to: heating the metal pipeline 50 by using an electromagnetic induction heating device (such as an electromagnetic coil), wherein the heating part is close to the straight pipe body 11 and is heated to 90-95 ℃ for 5 minutes; starting the non-Newtonian fluid valve blockage cleaning mechanism, repeating the step 2.3 and the step 2.4, and finally obtaining the blockage rate lambda of the interior of the first valve4The results are shown in Table 1.
TABLE 1
Compare λ in Table 11And λ3Therefore, the following steps are carried out: when the non-Newtonian fluid is blocked in the mud valve, the blocking cleaning mechanism of the non-Newtonian fluid valve is started, so that the inside of the mud valve can be dredged remarkably, and the blocking rate in the mud valve is reduced remarkably.
Compare λ in Table 11And λ2、λ3And λ4Therefore, the following steps are carried out: when the non-Newtonian fluid valve blockage cleaning mechanism is used for Newtonian fluid, no obvious evidence proves that the blockage condition can be improved.
Analysis of lambda4All negative values indicate that: because non-Newtonian fluid valve blocks up clearance mechanism and can produce some driving forces in the operation process to can be favorable to water to flow to the output of mud valve from straight tube 11, finally cause the discharged water yield of mud valve output end more, thereby lead to lambda4Are both negative values.
Example 7
Vibration and driving force characterization test
In the test, a non-Newtonian fluid valve blockage cleaning mechanism is not installed at the output end of the mud valve; the mud valve at this time is simply called valve two. A triaxial acceleration sensor is installed on the axis of the output end of the mud valve, and the triaxial acceleration sensor selects an LS type product of Shenzhen Yingxin Chungchu science and technology Limited and a matched spectrum analyzer; the sensitivity of the triaxial acceleration sensor is 100mv/g, and the transverse sensitivity is less than 5%.
When the non-Newtonian fluid valve blockage cleaning mechanism of the second valve operates, the second valve is fully opened, a time domain signal measured by the three-axis acceleration sensor is subjected to fast Fourier transform to obtain a spectrogram of a channel signal at the axis, and a corresponding acceleration vibration amplitude and a corresponding frequency can be obtained from the spectrogram; the frequency of the ultrasonic transducer 23 during operation is 17-21kHz during measurement, and the input flow at the position of the straight tube body 11 is 8m3H is used as the reference value. When the three-axis acceleration sensor is installed, the three-axis acceleration sensor is close to a valve seat, the channel direction X of the three-axis acceleration sensor corresponds to the axial direction of the straight pipe body 11, the channel direction Y of the three-axis acceleration sensor corresponds to the vertical direction of the straight pipe body 11, and the channel direction Z of the three-axis acceleration sensor corresponds to the front-back direction of the straight pipe body 11; the above, lower, left, right, front and rear are described with respect to fig. 2.
When the frequency of the ultrasonic transducer 23 during operation is 17kHz, the measured corresponding frequency spectrum is automatically counted by software: in one period, the maximum amplitude value of the X direction is more than 3.142m/s2The corresponding interval area and the maximum amplitude value are more than 1m/s2The percentage between the corresponding zone areas is γ.
Example 8
The slurry valve provided with the non-Newtonian fluid valve blockage cleaning mechanism in the embodiment 5 is simply called a valve III. The bentonite and the water are uniformly mixed according to the mass ratio of 2:1 to prepare the slurry. The sludge pump dedicated to the filter press in example 6 was used to feed the slurry to the straight pipe body 11. The valve three is fully opened, and the test is performed according to the vibration force and pushing force characterization test in example 7, and when the ultrasonic transducer 23 is operated, 5 sets of data are measured at the frequencies of 17kHz, 18kHz, 19kHz, 20kHz and 21kHz, as shown in Table 2.
TABLE 2
According to the analysis of table 2, it can be seen that, during the operation of the non-newtonian fluid valve blockage cleaning mechanism, the vibration mainly in the X (left-right direction) can reach the maximum amplitude, and the maximum amplitude of the X (left-right direction) is obviously larger than that of the Y (up-down direction) and the Z (front-back direction); as can be seen from fig. 1, the crossbar section 32 generates a very large pushing force at the straight pipe body 11, so that the straight pipe body 11 and the input end of the mud valve can be effectively dredged.
In the present embodiment, the fluid inside the straight pipe body 11 is slurry. Finally, it was determined that: in one period, the maximum amplitude value of the X direction is more than 3.142m/s2The corresponding interval area and the maximum amplitude value are more than 1m/s2The percentage between the corresponding interval areas is gamma1The results are shown in Table 3.
Example 9
In this example, the test was conducted in accordance with "vibration and driving force characterization test" in example 7, and the fluid inside the straight tube body 11 was pure water, and finally measured: in one period, the maximum amplitude value of the X direction is more than 3.142m/s2The corresponding interval area and the maximum amplitude value are more than 1m/s2The percentage between the corresponding interval areas is gamma2The results are shown in Table 3.
Example 10
The difference between this embodiment and embodiment 5 is that the final product of this embodiment is a comparison valve five; the media ball 25 of example 5 was replaced with a solid ball, the corresponding mud valve being the control valve five.
The control valve five was tested according to the vibration and thrust characterization test in example 7, and the fluid inside the straight pipe body 11 was slurry, which was the same as the slurry in example 8. Finally, it was determined that: in one period, the maximum amplitude value of the X direction is more than 3.142m/s2The corresponding interval area and the maximum amplitude value are more than 1m/s2The percentage between the corresponding interval areas is gamma3The results are shown in Table 3.
TABLE 3
| γ1(％) | γ2(％) | γ3(％) |
| 13.17 | 7.23 | 4.11 |
By contrast of gamma1And gamma2Therefore, the following steps are carried out: pure water as a medium tends to generate a large amount of resonance with a small amplitude in pure water, and the resonance is concentrated, so that γ is2The value is small.
Example 11
The difference between this embodiment and embodiment 5 is that the final product of this embodiment is a comparison valve one; the cross rod segment 32 in example 5 is replaced by a first control rod with a whole cylindrical structure, and the corresponding mud valve is the first control valve.
The control valve was tested according to the vibratory and impulse force characterization test of example 7, and the fluid inside the straight pipe 11 was a slurry, which was the same as the slurry in example 8. When measuring, the ultrasonic transducer 23 was operated at frequencies of 17kHz, 18kHz, 19kHz, 20kHz, and 21kHz, and 5 sets of data were measured, as shown in Table 4.
TABLE 4
Example 12
The difference between this embodiment and embodiment 5 is that the final product of this embodiment is a comparison valve two; the cross rod section 32 in example 5 was replaced with a second control rod, which had a diamond cross section and the corresponding finished valve was the second control valve.
The second control valve was tested according to the vibration and propulsion characterization test in example 7, and the fluid inside the straight pipe 11 was slurry, which was the same as the slurry in example 8. When measuring, the ultrasonic transducer 23 was operated at frequencies of 17kHz, 18kHz, 19kHz, 20kHz, and 21kHz, and 5 sets of data were measured, as shown in Table 5.
TABLE 5
Example 13
The difference between this embodiment and embodiment 5 is that the final product of this embodiment is a comparison valve three; the cross-rod segment 32 of example 5 was replaced with a tapered control rod three, the mud valve of which was designated control valve three. And the small end of the third control rod in the third control valve points to the valve seat of the third control valve.
The third control valve was tested according to the vibration and propulsion characterization test of example 7, and the fluid inside the straight pipe 11 was slurry, which was the same as the slurry in example 8. When the ultrasonic transducer 23 was operated at frequencies of 17kHz, 18kHz, 19kHz, 20kHz, and 21kHz, 5 sets of data were measured, as shown in Table 6.
TABLE 6
Example 14
The difference between this embodiment and embodiment 5 is that the final product of this embodiment is a comparison valve four; the cross-rod segment 32 of example 5 was replaced with control rod four, which was oval in cross-section and the corresponding mud valve was control valve four.
The control valve IV was tested according to the vibration and propulsion characterization test of example 7, and the fluid inside the straight pipe 11 was slurry, which was the same as the slurry in example 8. When the ultrasonic transducer 23 was operated at frequencies of 17kHz, 18kHz, 19kHz, 20kHz, and 21kHz, 5 sets of data were measured, as shown in Table 7.
TABLE 7
Example 15
The use of the non-newtonian fluid valve blockage removal mechanism of embodiments 1-5 as a mud valve accessory in a shield machine, the non-newtonian fluid valve blockage removal mechanism being mounted at an input or output end of a mud valve, the fluid passing through the interior of the mud valve being a non-newtonian fluid, including but not limited to oil, mud, coal water slurry, ceramic slurry, pulp, paint, ink, toothpaste, well-flushing and completion fluids for drilling, high sand-laden water flow, mudstone flow, mantle, and the like.
In the above embodiment, as can be seen from analyzing tables 4 and 2, the maximum amplitude value in the X direction in table 4 is significantly smaller than the maximum amplitude value in the X direction in table 2, which indicates that if the cross rod segment 32 has a cylindrical structure, the pushing force generated inside the straight pipe body 11 is limited, and the dredging effect inside the straight pipe body 11 is limited.
As can be seen from analyzing tables 5 and 2, the maximum amplitude value in the X direction in table 5 is significantly smaller than the maximum amplitude value in the X direction in table 2, which indicates that if the cross section of the cross-bar section 32 is a diamond shape, the pushing force generated inside the straight pipe body 11 is limited, and the dredging effect inside the straight pipe body 11 is limited.
Comparing table 4 with table 5, if the rail section 32 has an edge, its maximum amplitude of X, Y, Z is significantly increased, indicating that the vibration effect is better.
As can be seen from the analysis of tables 6, 2, and 4, the maximum amplitude value in the X direction in table 6 is significantly improved and approaches the maximum amplitude value in the X direction in table 2, as compared to table 4; this means that the transverse rod section 32, if it is a conical rod, can significantly increase the thrust generated inside the straight pipe body 11. However, the maximum amplitude value of Y, Z direction in table 6 is significantly lower than the maximum amplitude value of Y, Z direction in table 2; the maximum amplitude value in Y, Z direction in table 6 was not significantly improved as compared with the maximum amplitude value in Y, Z direction in table 4. The vibration amplitude is too small, which means that the effect of vibration on the inside of the linear tube 11 is limited.
As can be seen from analysis of tables 7, 2, 4, and 5, the maximum amplitude value in the X direction in table 7 is close to the maximum amplitude value in the X direction in table 5; the maximum amplitude fluctuation range in Y, Z direction in table 7 is large, and is in the maximum amplitude range in Y, Z direction in tables 4 and 5, and there is no significant improvement.
By contrast of gamma1And gamma3Therefore, the following steps are carried out: gamma ray3The value is very small, which shows that the solid ball has better effect of transmitting high-frequency vibration. It is also proved from the side that the medium ball 25 of the present invention adopts the hollow metal ball shell 251 to match with the hollow metal ball shell 251, which can generate a large amount of medium and low frequency vibration with smaller amplitude, thereby greatly improving the resonance effect of the slurry.
The non-Newtonian fluid valve blockage cleaning mechanism can also be applied to the field of non-shield machines.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The non-Newtonian fluid valve blockage cleaning mechanism comprises a circular tube-shaped straight tube body (11) and an inclined tube (21) which is obliquely arranged, wherein flanges (13) are fixedly arranged at two ends of the straight tube body (11) respectively, and the flanges (13) are connected with the end part of the straight tube body (11) into a whole; the lateral wall of straight body (11) is provided with the mounting hole that is linked together with pipe chute (21) head end, its characterized in that: the ultrasonic vibration tube is characterized by further comprising a vibration plate (22) arranged at the tail end of the inclined tube (21), an ultrasonic transducer (23) used for driving the vibration plate (22) to vibrate, and a plurality of vibration rods (30) distributed in an array manner, wherein the edge of the vibration plate (22) is connected with the tail end of the inclined tube (21) in a sealing manner, and the ultrasonic transducer (23) is fixedly arranged on the outer side of the vibration plate (22); the vibrating rod (30) comprises an inclined rod section (31) and a transverse rod section (32), wherein the inclined rod section (31) is arranged in parallel to the axial direction of the inclined pipe (21), the transverse rod section (32) is arranged in parallel to the axial direction of the straight pipe body (11), the tail end of the inclined rod section (31) is arranged inside the inclined pipe (21), the tail end of the inclined rod section (31) is fixedly connected with the vibrating plate (22), the head end of the inclined rod section (31) is arranged inside the straight pipe body (11), the head end of the inclined rod section (31) is connected with the tail end of the transverse rod section (32) into a whole, and the head end of the transverse rod section (32) is arranged outside the straight pipe body (11); the inclined tube (21) is further filled with a plurality of medium balls (25), a grid (24) used for preventing the medium balls (25) from overflowing the inclined tube (21) is arranged at the mounting hole, the edge of the grid (24) is fixedly connected with the hole wall of the mounting hole, and the grid (24) is provided with a grid structure for the inclined rod section (31) to penetrate through and move.
2. A non-newtonian fluid valve blockage clearing mechanism according to claim 1, wherein: the outside of flange (13) is provided with ring form holding tank (15), the cross section of holding tank (15) is the arc structure.
3. A non-newtonian fluid valve blockage clearing mechanism according to claim 2, wherein: the side of flange (13) is provided with a plurality of circular through-holes (14), through-hole (14) all set up the periphery at holding tank (15).
4. A non-newtonian fluid valve blockage clearing mechanism according to claim 1, wherein: the cross section of the sway rod section (31) is circular, the cross rod section (32) comprises a first rod part (321) with an oval cross section and a second rod part (322) coaxially arranged with the first rod part (321), the tail end of the first rod part (321) is connected with the head end of the sway rod section (31) into a whole, the head end of the first rod part (321) is connected with the tail end of the second rod part (322) into a whole, the cross section of the tail end of the second rod part (322) is oval, and the cross section of the head end of the second rod part (322) is rhombic; the cross-sectional area of the second rod part (322) continuously decreases from the tail end of the second rod part (322) to the head end of the second rod part (322); from the tail end of the second rod part (322) to the head end of the second rod part (322), the oval structure of the side wall of the second rod part (322) and the diamond structure of the side wall of the second rod part (322) are in smooth transition.
5. The non-Newtonian fluid valve blockage clearing mechanism of claim 4, wherein: the lengths of the inclined rod sections (31) are equal, and the lengths of the transverse rod sections (32) are equal.
6. The non-Newtonian fluid valve blockage clearing mechanism of claim 4, wherein: the lengths of the inclined rod sections (31) are equal, and the curved surface formed by arranging the head ends of the transverse rod sections (32) outside the straight pipe body (11) is of a spherical crown structure.
7. A non-newtonian fluid valve blockage clearing mechanism according to claim 1, wherein: the frequency of the ultrasonic transducer (23) is 17-43kHz when in work.
8. A non-newtonian fluid valve blockage clearing mechanism according to claim 1, wherein: the length direction of the diagonal rod section (31) is perpendicular to the plate surface of the vibrating plate (22).
9. The use of the non-newtonian fluid valve blockage clearing mechanism of claim 1 as a mud valve fitting in a shield tunneling machine.
10. The use of a non-newtonian fluid valve blockage clearing mechanism as a mud valve fitting in a shield tunneling machine, according to claim 9, wherein: the non-Newtonian fluid valve blockage cleaning mechanism is installed at the input end or the output end of the mud valve, and the fluid passing through the inside of the mud valve is the non-Newtonian fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011346949.9A CN112605076B (en) | 2020-11-26 | 2020-11-26 | non-Newtonian fluid valve blockage cleaning mechanism and application thereof in shield tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011346949.9A CN112605076B (en) | 2020-11-26 | 2020-11-26 | non-Newtonian fluid valve blockage cleaning mechanism and application thereof in shield tunneling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112605076A CN112605076A (en) | 2021-04-06 |
| CN112605076B true CN112605076B (en) | 2021-08-13 |
Family
ID=75225259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011346949.9A Active CN112605076B (en) | 2020-11-26 | 2020-11-26 | non-Newtonian fluid valve blockage cleaning mechanism and application thereof in shield tunneling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112605076B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115283376B (en) * | 2022-08-10 | 2023-03-28 | 英诺威阀业有限公司 | Slurry valve special for shield machine |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6363566B1 (en) * | 1999-12-18 | 2002-04-02 | Michael Collins | Drain valve and pipe blockage clearing device |
| KR20070037113A (en) * | 2005-09-30 | 2007-04-04 | 이화원 | A pipe cleaning method by a supersonic vibrator |
| GB2440948A (en) * | 2006-08-15 | 2008-02-20 | Shirley Mckay | A method of removing blockages from the internal surfaces of pipes |
| KR101360110B1 (en) * | 2012-04-17 | 2014-02-11 | 김현용 | Device for descaling scale of pipe |
| NO20131438A1 (en) * | 2013-10-30 | 2015-04-20 | Empig As | Method and system for removing deposits inside a pipe or pipeline |
| DE102014206820A1 (en) * | 2014-04-09 | 2015-10-15 | Siemens Aktiengesellschaft | A method of removing hydrocarbonaceous deposits formed on a surface of a device |
| CN204503687U (en) * | 2015-03-29 | 2015-07-29 | 洪新强 | A kind of idle call vibrating dust removing pipeline |
| CN106166556A (en) * | 2016-05-13 | 2016-11-30 | 天津科技大学 | Inner-walls of duct descaling method based on supersonic guide-wave technology |
| US10655455B2 (en) * | 2016-09-20 | 2020-05-19 | Cameron International Corporation | Fluid analysis monitoring system |
| CN207072806U (en) * | 2017-06-02 | 2018-03-06 | 山东衡远新能源科技有限公司 | A kind of slurry conveying device |
| KR20180137632A (en) * | 2017-06-16 | 2018-12-28 | 주식회사 포스코 | Apparatus for Removing foreign material from pipe |
| CN107537755A (en) * | 2017-09-18 | 2018-01-05 | 杭州电子科技大学 | Applied to desalinization transmission and the anti-scale removal circuit of heat exchanging pipe |
| CN107497793B (en) * | 2017-09-30 | 2024-03-12 | 中冶赛迪技术研究中心有限公司 | Ultrasonic vibration cleaning device and method for aluminum groove crust-breaking hammer |
| CN108580428B (en) * | 2018-04-24 | 2020-11-24 | 惠安材研黑丝通讯设备有限公司 | Washing device for descaling shower head |
| CN109488821B (en) * | 2018-10-30 | 2020-10-27 | 江苏赛弗道管道股份有限公司 | Fluid conveying pipeline |
| CN110404893A (en) * | 2019-07-30 | 2019-11-05 | 阜阳华润电力有限公司 | A kind of pipeline block-resistant plug device |
| CN211059585U (en) * | 2019-10-17 | 2020-07-21 | 中国十七冶集团有限公司 | Prevent pumping pipeline of jam |
| CN111089216A (en) * | 2019-12-31 | 2020-05-01 | 西安帝凡合赢科技发展有限公司 | Stainless steel pipeline |
-
2020
- 2020-11-26 CN CN202011346949.9A patent/CN112605076B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112605076A (en) | 2021-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112605076B (en) | non-Newtonian fluid valve blockage cleaning mechanism and application thereof in shield tunneling machine | |
| CN103149144B (en) | Oil well pipe column high-temperature corrosion erosion performance test device and test method | |
| CN112588708B (en) | Anti-blocking mud valve for shield machine | |
| JP2009505818A (en) | Method and apparatus for ultrasonic treatment of liquid with low frequency-high power-ultrasonic | |
| CN102944608A (en) | Device and method for ultrasonic testing of corrugated pipe duck grouting compactness | |
| Wang et al. | Performance of cavitation flow and its induced noise of different jet pump cavitation reactors | |
| CN107252658A (en) | A kind of groove type ultrasonic ripple liquid handling device | |
| CN101311717A (en) | Rotary type ultrasound flaw-detecting coupling device of probe for detecting defect of pipes and bar material | |
| CN203178168U (en) | Oil well pipe column high-temperature corrosion erosion performance test device | |
| CN104713950A (en) | Acoustic wave test coupling device and test method thereof | |
| CN106767721A (en) | A kind of valley Xia Shen sections water-depth measurement method and apparatus | |
| CN112302965B (en) | Slurry pump performance detection method and device | |
| CN1828288A (en) | Guide-wave detection method for fluid pipe with adhesive and elastic cladding | |
| CN210605000U (en) | Portable detection device for blockage of exposed filling pipeline | |
| CN204479519U (en) | Sonic test coupling device | |
| CN215492773U (en) | A quick dissolving device for soil heavy metal detects | |
| CN210856117U (en) | Homogeneity device for microbiological detection | |
| CN105477958A (en) | Starch dust collector | |
| CN219502965U (en) | Inflatable stirring flotation machine | |
| CN108398375B (en) | Multiphase flow erosion corrosion test device | |
| CN105948441A (en) | Activated sludge treatment device | |
| CN111514771A (en) | Intelligent optimization system of limestone slurry production line | |
| CN117346716B (en) | Method and device for measuring size of soil vacuum extraction pipeline | |
| CN116087333B (en) | Symmetrical ultrasonic imaging device | |
| CN220708666U (en) | Vibration-resistant detection device for performance of acoustic pipe joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211221 Address after: 244000 4th floor, management committee, Shizishan hi tech Industrial Development Zone, Tongling City, Anhui Province Patentee after: YINGNUOWEI VALVE INDUSTRY Co.,Ltd. Address before: No. 188, north section of Tongdu Avenue, Tongling City, Anhui Province, 244000 Patentee before: ANHUI TONGDU FLOW TECHNOLOGY Co.,Ltd. |