CN103216439B - The dynamic sealing assembly of pumping mechanism, the detection system of this dynamic sealing assembly and detecting method - Google Patents
The dynamic sealing assembly of pumping mechanism, the detection system of this dynamic sealing assembly and detecting method Download PDFInfo
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- CN103216439B CN103216439B CN201310115630.9A CN201310115630A CN103216439B CN 103216439 B CN103216439 B CN 103216439B CN 201310115630 A CN201310115630 A CN 201310115630A CN 103216439 B CN103216439 B CN 103216439B
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Abstract
The invention discloses a kind of dynamic sealing assembly of pumping mechanism, the detection system of this dynamic sealing assembly and detecting method.The dynamic sealing assembly of pumping mechanism comprise with the use of glasses plate and cutting ring, form annular contact surface between glasses plate and cutting ring, glasses plate or cutting ring arrange intermediate pressure detect aperture; First port of intermediate pressure detect aperture is between the outer edge and inside edge of annular contact surface, and the second port is positioned at the outer surface of glasses plate or cutting ring.Utilize this dynamic sealing assembly, the pressure in precalculated position can be detected by intermediate pressure detect aperture; And then liquid film can be obtained at annular contact surface pressure distribution function line in the radial direction, and then the active force of liquid film to cutting ring can be obtained, and then the stressing conditions of cutting ring can be obtained more exactly, for the optimal design being slidably matched and being sealed and matched between cutting ring and glasses plate provides foundation.
Description
Technical field
The present invention relates to the technology of pumping mechanism, particularly a kind of dynamic sealing assembly of pumping mechanism, also relate to a kind of detection system of this dynamic sealing assembly and the detecting method of this dynamic sealing assembly.
Background technique
Current, usually with pumping mechanism by concrete, mud or other fluid material pumpings to preposition.Pumping mechanism comprises one group of dynamic sealing assembly, this dynamic sealing assembly comprise with the use of glasses plate and cutting ring.
As depicted in figs. 1 and 2, Fig. 1 is the cooperating structure schematic diagram of glasses plate and cutting ring, and Fig. 2 is A-A sectional structure schematic diagram in Fig. 1.Glasses plate 10 forms two feeding holes, and cutting ring 20 is a ring structure, forms a feeding hole.The end face of the input end of cutting ring 20 coordinates with a side slipper seal of glasses plate 10, output terminal connect in a delivery pipe 30(Fig. 2 illustrate with double dot dash line).Cutting ring 20 can move back and forth by the X camber line (or other tracks) shown in FIG relative to glasses plate 10; When cutting ring 20 moves to right part (taking Fig. 1 as reference), the feeding hole of cutting ring 20 communicates with the feeding hole of glasses plate 10 right part, and now a conveying cylinder can make material flow in delivery pipe 30 by the feeding hole of glasses plate 10 right part feeding hole, cutting ring 20; Moving to left part in cutting ring 20 (take Fig. 1 as reference, the position of the cutting ring 20 be shown in broken lines) time, the feeding hole of cutting ring 20 communicates with the feeding hole of glasses plate 10 left part, and now another conveying cylinder can make material be flow in delivery pipe 30 by the feeding hole of glasses plate 10 left part feeding hole, cutting ring 20.Like this, by the to-and-fro motion of cutting ring 20 with predetermined pressure by material pumping to preposition.When cutting ring 20 is positioned at right part or left part, is formed between the end face of the input end of cutting ring 20 and a side of glasses plate 10 in an annular contact surface S(Fig. 1 and illustrate with the hatching that dotted line is formed).This annular contact surface S can ensure the sealing between glasses plate 10 and cutting ring 20, avoids being leaked from the annular contact surface S between cutting ring 20 and glasses plate 10 by the material in feeding hole.
Ensure the pumping pressure of pumping mechanism, being sealed and matched between cutting ring 20 and glasses plate 10 will be ensured; Meanwhile, pumping be realized, also will ensure being slidably matched between cutting ring 20 and glasses plate 10.Therefore, for cutting ring 20 and glasses plate 10, will coordinate to be slidably matched and to be sealed and matched.Being slidably matched and being sealed and matched is conflict, when ensureing to be slidably matched, just needing to reduce active force therebetween, and then can affect sealability therebetween; On the contrary, when ensureing to be sealed and matched, just needing to increase active force therebetween, being slidably matched therebetween will be affected, cause wearing and tearing to be accelerated or/and unidirectional driving power increases.
Current, mainly rule of thumb and the parameter of actual tests data determination dynamic sealing assembly; This not only causes the acquisition cycle of dynamic sealing assembly parameter very long, also cannot really coordinate to be slidably matched and to be sealed and matched, or cannot ensure being sealed and matched therebetween, or cannot ensure being slidably matched therebetween.Therefore, how coordinating being slidably matched and being sealed and matched between cutting ring 20 and glasses plate 10 better, is the technical barrier that current those skilled in the art need to solve.
Summary of the invention
Based on the overall object being slidably matched and being sealed and matched coordinated better between cutting ring and glasses plate, first object of the present invention is, a kind of dynamic sealing assembly of pumping mechanism is provided, utilize this dynamic sealing assembly can obtain the stressing conditions of cutting ring more exactly, and then can provide convenience for coordinating being slidably matched and being sealed and matched between cutting ring and glasses plate.
Second object of the present invention is, a kind of detection system of dynamic sealing assembly of pumping mechanism is provided, utilize this detection system can obtain the stressing conditions of cutting ring more exactly, and then can provide convenience for coordinating being slidably matched and being sealed and matched between cutting ring and glasses plate.
3rd object of the present invention is, a kind of detecting method of dynamic sealing assembly of pumping mechanism is provided, utilize the method can obtain the stressing conditions of cutting ring more exactly, and then can provide convenience for coordinating being slidably matched and being sealed and matched between cutting ring and glasses plate.
The dynamic sealing assembly of pumping mechanism provided by the invention comprise with the use of glasses plate and cutting ring, form annular contact surface between described glasses plate and cutting ring, described glasses plate or cutting ring arrange at least one intermediate pressure detect aperture; First port of described intermediate pressure detect aperture is between the outer edge and inside edge of described annular contact surface, and the second port is positioned at the outer surface of described glasses plate or cutting ring.
Optionally, described glasses plate or cutting ring at least arrange two described intermediate pressure detect aperture.
Optionally, the spacing of the first port of a described intermediate pressure detect aperture and the inside edge of described annular contact surface is L1; The spacing of the first port of intermediate pressure detect aperture described in another and the inside edge of described annular contact surface is L2; Described L1 is less than L2.
Optionally, described glasses plate arranges described intermediate pressure detect aperture.
The detection system of the dynamic sealing assembly of pumping mechanism provided by the invention, comprises the dynamic sealing assembly of any one pumping mechanism above-mentioned, also comprises the intermediate pressure sensor for detecting liquid pressure in described intermediate pressure detect aperture.
Optionally, the detection system of the dynamic sealing assembly of described pumping mechanism also comprises fluid source, and described fluid source is communicated with described intermediate pressure detect aperture by one-way valve.
Optionally, the detection system of the dynamic sealing assembly of described pumping mechanism also comprises the pumping pressure transducer of the pumping pressure detecting pumping mechanism.
Optionally, the detection system of the dynamic sealing assembly of described pumping mechanism also comprises the controller be electrically connected with intermediate pressure sensor and pumping pressure transducer respectively;
Described controller performs predetermined policy for the testing signal of the testing signal according to intermediate pressure sensor, pumping pressure transducer;
Described predetermined policy is: according to the testing signal of pumping pressure transducer, the testing signal of intermediate pressure sensor, the position of the first port of the pressure of the outer edge of predetermined described annular contact surface, described annular contact surface size and described intermediate pressure detect aperture adopts curve mode to obtain liquid film at annular contact surface pressure distribution function line in the radial direction; The first active force that the end face obtaining described cutting ring input end according to described pressure distribution function line and described annular contact surface size again bears.
Optionally, the detection system of the dynamic sealing assembly of described pumping mechanism also comprises the input device by force parameter of the output terminal for inputting described cutting ring; Described controller is electrically connected with described input device; Described controller is also for the second active force that the end face obtaining described cutting ring output terminal by the testing signal of force parameter and described pumping pressure transducer inputted according to described input device bears.
Optionally, described controller is also for obtaining the ideal of described cutting ring output terminal by force parameter according to described first active force and described pumping pressure.
In the detecting method of the dynamic sealing assembly of pumping mechanism provided by the invention, the dynamic sealing assembly of described pumping mechanism is the dynamic sealing assembly of any one pumping mechanism above-mentioned; This detecting method comprises the steps:
Curve mode is adopted to obtain liquid film at annular contact surface pressure distribution function line in the radial direction according to the position of the first port of the pressure of the pumping pressure of pumping mechanism, described intermediate pressure detect aperture, the pressure of the outer edge of predetermined described annular contact surface, described annular contact surface size and described pressure detect aperture;
The first active force that the end face obtaining described cutting ring input end according to described pressure distribution function line and described annular contact surface size again bears.
Optionally, also comprise:
The ideal of described cutting ring output terminal is obtained by force parameter according to the first active force and described pumping pressure.
In the dynamic sealing assembly of pumping mechanism provided by the invention, comprise with the use of glasses plate and cutting ring, form annular contact surface between described glasses plate and cutting ring, described glasses plate or cutting ring be provided with at least one intermediate pressure detect aperture; First port of described intermediate pressure detect aperture is between the outer edge and inside edge of described annular contact surface, and the second port is positioned at the outer surface of described glasses plate or cutting ring.Utilize this dynamic sealing assembly, the pressure in precalculated position between annular contact surface outer edge and inside edge can be detected by intermediate pressure detect aperture; The pressure of liquid film at annular contact surface at least three points in the radial direction just can be obtained again in conjunction with the pumping pressure of pumping mechanism; And then just can obtain liquid film at annular contact surface pressure distribution function line in the radial direction by the mode of curve according to the pressure of these three points again, and then liquid film can be obtained on annular contact surface more exactly to the active force of cutting ring, and then the stressing conditions of cutting ring can be obtained more exactly, provide convenience for coordinating being slidably matched and being sealed and matched between cutting ring and glasses plate.
In further technological scheme, described glasses plate or cutting ring at least arrange two intermediate pressure detect aperture.The pressure of more point on annular contact surface can be obtained like this; And then the pressure distribution function line of acquisition can be made more accurate.
In further technological scheme, the spacing of the first port of a described intermediate pressure detect aperture and the inside edge of described annular contact surface is L1; The spacing of the first port of intermediate pressure detect aperture described in another and the inside edge of described annular contact surface is L2; Described L1 is less than L2.Like this, the point of acquisition pressure can be made more uniformly to be distributed in the radial direction of annular contact surface, improve the degree of accuracy of the pressure distribution function line obtained further.
In further technological scheme, described glasses plate arranges described intermediate pressure detect aperture.In pumping mechanism, relative to cutting ring, the glasses plate in dynamic sealing assembly is static part.Intermediate pressure detect aperture is arranged in glasses plate, can ensure that the pressure obtained is more reliable and stable, be conducive to the degree of accuracy improving the pressure distribution function line obtained.
The detection system of the dynamic sealing assembly of pumping mechanism provided by the invention, comprises the intermediate pressure sensor of liquid pressure in above-mentioned dynamic sealing assembly and detection intermediate pressure detect aperture.Owing to comprising above-mentioned dynamic sealing assembly, this detection system has corresponding technique effect, liquid film can be obtained on annular contact surface more exactly to the active force of cutting ring, and then can provide convenience for coordinating being slidably matched and being sealed and matched between cutting ring and glasses plate.
In the detecting method of the dynamic sealing assembly of pumping mechanism provided by the invention, utilize the dynamic sealing assembly of above-mentioned pumping mechanism, the active force of liquid film to cutting ring can be obtained more exactly, and then can provide convenience for coordinating being slidably matched and being sealed and matched between cutting ring and glasses plate.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.
Fig. 1 is the cooperating structure schematic diagram of glasses plate and cutting ring;
Fig. 2 is A-A sectional structure schematic diagram in Fig. 1;
In the dynamic sealing assembly detection system of a kind of pumping mechanism that Fig. 3 provides for the embodiment of the present invention, the sectional structure schematic diagram of dynamic sealing assembly;
Fig. 4 is I-I magnified partial view in Fig. 3, and this figure illustrates the control principle of detection system simultaneously;
Fig. 5 is the detecting method flow chart of the dynamic sealing assembly of the pumping mechanism that the embodiment of the present invention provides.
Embodiment
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
The present invention is based on an overall object being slidably matched and being sealed and matched coordinated better between cutting ring and glasses plate to propose.The general thought realizing this overall object is as follows:
In dynamic sealing assembly, glasses plate is the parts of geo-stationary, and cutting ring is the parts of relative movement.Coordinate being slidably matched and being sealed and matched between cutting ring and glasses plate, accurately obtain the stressing conditions of cutting ring.
When pumping mechanism carries out pumping material, the liquid of material forms a liquid film between glasses plate and cutting ring.Refer again to Fig. 2, on centerline direction, the end face of the input end of cutting ring 20 is subject to the reaction force F3 of the active force of liquid film (this active force is called the first directed force F 1 in this document), glasses plate 10.The end face of the output terminal of cutting ring 20 is subject to the active force (this active force is called the second directed force F 2 in this document) of material in delivery pipe 30; On centerline direction, cutting ring 20 realizes balance (ideal situation is: interacted by liquid film between glasses plate and cutting ring, does not directly produce contact, and namely reaction force F3 is zero) under three's effect.And in pumping material process, the second directed force F 2 changes with material pressure effect and changes, according to delivery tube and the delivery position height difference of pumping mechanism, the second directed force F 2 excursion can be larger; According to stress balance principle, this will cause the reaction force of the first directed force F 1 and glasses plate 10 also to have fluctuation.Second directed force F 2 is relevant to the pumping pressure of pumping mechanism and the face area of output terminal, can be different according to operating mode, obtains according to pumping pressure.Therefore, will obtain the stressing conditions of cutting ring 20 exactly, accurately obtaining the first directed force F 1 becomes the key realizing above-mentioned overall object.
Based on above-mentioned analysis, embodiments provide the detecting method of the dynamic sealing assembly of pumping mechanism, the detection system of the dynamic sealing assembly of pumping mechanism and the dynamic sealing assembly of pumping mechanism.Technique scheme can obtain the first directed force F 1 more exactly, and then can obtain the stressing conditions of cutting ring more exactly, and then according to the stressing conditions of cutting ring, can coordinate being slidably matched and being sealed and matched between cutting ring and glasses plate.For the ease of public understanding, in following examples, cutting ring and glasses plate have employed different reference characters respectively and are described.
Based on the detecting method of the dynamic sealing assembly of pumping mechanism, the detection system of the dynamic sealing assembly of pumping mechanism and the dynamic sealing assembly of pumping mechanism based on same working principle, and it is interrelated between three, for the ease of public understanding, below while the structure of the detection system of the dynamic sealing assembly to pumping mechanism, principle and working procedure are described, the detecting method of the dynamic sealing assembly of pumping mechanism and the dynamic sealing assembly of pumping mechanism is described; No longer the detecting method of the dynamic sealing assembly of pumping mechanism and the dynamic sealing assembly of pumping mechanism is described separately.Should be noted that: the detecting method three that foregoing description mode does not represent the dynamic sealing assembly of pumping mechanism, the detection system of the dynamic sealing assembly of pumping mechanism and the dynamic sealing assembly of pumping mechanism must exist simultaneously.
In addition, there is a need to illustrate: for the detection system of the dynamic sealing assembly of pumping mechanism, its testing goal is to determine in the pumping mechanism of a certain model, the coordination being slidably matched and being sealed and matched of dynamic sealing assembly, this detection system can comprise dynamic sealing assembly itself, after the detection of this detection system or adjust size, the dynamic sealing assembly of corresponding size can be applied in the pumping mechanism of respective model.For dynamic sealing assembly, may be used for detection system and detecting method, also can apply in the pumping mechanism of reality.
Please refer to Fig. 3 and Fig. 4, in the dynamic sealing assembly detection system of a kind of pumping mechanism that Fig. 3 provides for the embodiment of the present invention, the sectional structure schematic diagram of dynamic sealing assembly; This figure is the sectional structure schematic diagram of the dynamic sealing assembly of a kind of pumping mechanism that the embodiment of the present invention provides simultaneously; Fig. 4 is I-I magnified partial view in Fig. 3, and this figure illustrates the control principle of detection system simultaneously.
The detection system of the dynamic sealing assembly of the pumping mechanism that the embodiment of the present invention provides, comprises dynamic sealing assembly and two intermediate pressure sensors 400 of a pumping mechanism.
Above-mentioned dynamic sealing assembly comprise with the use of glasses plate 100 and cutting ring 200.Annular contact surface S is formed between glasses plate 100 and cutting ring 200; In Fig. 4, B point illustrates the inside edge of annular contact surface S, and A point illustrates the outer edge of annular contact surface S.In this example, annular contact surface S is ring, and certainly, annular contact surface S also can be other shapes.
Glasses plate 100 is provided with two intermediate pressure detect aperture 300.First port of two intermediate pressure detect aperture 300 is all between the outer edge and inside edge of annular contact surface S.Two intermediate pressure detect aperture 300 are respectively with 301 and 302 signals; The position of the first port of intermediate pressure detect aperture 301 is as shown in the C point in Fig. 4; The position of the first port of intermediate pressure detect aperture 302 is as shown in the D point in Fig. 4.As shown in the figure, in the present embodiment, the distance between A and B is divided into three parts by C point and D point.Second port of two intermediate pressure detect aperture 300 is all positioned at the outer surface of glasses plate 100.In this example, the second port of intermediate pressure detect aperture 300 and annular contact surface S lay respectively at two sides of glasses plate 100.
Two intermediate pressure sensors 400 may be used for the pressure detecting liquid in intermediate pressure detect aperture 300; The detection position of intermediate pressure sensor 400 can be positioned at the second end of intermediate pressure detect aperture 300, and this second end can be closed.Wherein, intermediate pressure sensor 410 detects the pressure of the liquid in intermediate pressure detect aperture 301, and intermediate pressure sensor 420 detects the pressure of the liquid in intermediate pressure detect aperture 302.
The working principle of said detecting system is:
Carry out in pumping procedure at pumping mechanism, the liquid in pumping material forms liquid film on annular contact surface S, and is full of intermediate pressure detect aperture 300 by the first port of intermediate pressure detect aperture 300.For each intermediate pressure detect aperture 300, the fluid in intermediate pressure detect aperture 300 keeps static substantially, and then the pressure of intermediate pressure detect aperture 300 first port inner fluid is substantially equal with the pressure of intermediate pressure detect aperture 300 second port inner fluid.
Like this, intermediate pressure sensor 400, by detecting the pressure of liquid in intermediate pressure detect aperture 300, just can obtain the pressure of corresponding intermediate pressure detect aperture 300 first port position.Like this, just can be obtained the pressure of C point by intermediate pressure sensor 410, just can be obtained the pressure of D point by intermediate pressure sensor 420.Be appreciated that the pressure of B point is substantially equal with the pumping pressure of pumping mechanism; The pressure of A point can be a predetermined value, is positioned at annular contact surface S outer edge based on A point, and the pressure of A point can be set as 0.So just can obtain the pressure of annular contact surface S at least four points in the radial direction.
Please refer to Fig. 5, this figure is the detecting method flow chart of the dynamic sealing assembly of the pumping mechanism that the embodiment of the present invention provides, and also can be the concrete processing mode of the pressure data based on above-mentioned four points.
Step S100, according to the position of the first port of the pressure of the pumping pressure of pumping mechanism, the pressure of intermediate pressure detect aperture 300, the outer edge of predetermined annular contact surface S, annular contact surface S size and each pressure detect aperture 300, curve mode is adopted to obtain liquid film at annular contact surface S pressure distribution function line in the radial direction.
Namely according to pressure and the position thereof of above-mentioned A, B, C, D tetra-points, then annular contact surface S pressure distribution function line in the radial direction can just be obtained according to the mode of existing curve.In this example, owing to having the pressure of four points, the pressure distribution function line of acquisition is a pressure distribution curve.
Step S200, the first directed force F 1 that the end face obtaining cutting ring 200 input end according to pressure distribution function line and annular contact surface S size bears.
The active force of liquid film to cutting ring 200 input end can be obtained more exactly according to the pressure distribution function line obtained and existing calculating or processing mode (as integral way), namely obtain the first directed force F 1.So just can provide convenience for coordinating being slidably matched and being sealed and matched between cutting ring and glasses plate.
Be appreciated that annular contact surface S in the radial direction, the point detecting pressure is more, and pressure distribution function line and the actual pressure distribution situation of acquisition are more close, and the first directed force F 1 of acquisition is more accurate.Under specific circumstances, above-mentioned dynamic sealing assembly also can arrange an intermediate pressure detect aperture 300, and then obtains predetermined pressure distribution function line by three points.
Step S300, the second directed force F 2 that the end face obtaining cutting ring 200 output terminal according to the pumping pressure of the size of the output terminal of cutting ring 200 and pumping mechanism bears.
Be subject to force parameter and pumping pressure according to the output terminal of cutting ring 200 can obtain the active force of material to cutting ring 200 output terminal, i.e. the second directed force F 2.The output terminal of cutting ring 200 can be the area of contact of output terminal and material by force parameter.In the present embodiment, the position of F point and E point in known Fig. 4, and then the area that the end face of output terminal of cutting ring 200 contacts with material can be determined, and then the second directed force F 2 can be obtained.
Step S400, contrasts the first directed force F 1 and the second directed force F 2, judges whether the cooperation between cutting ring 200 and glasses plate 100 meets pre-provisioning request.Can be specifically if that, large first directed force F 1 of the second directed force F 2, illustrate under this operating mode, the input end of cutting ring 200 is not only subject to the active force of liquid film, is also subject to the effect of the reaction force F3 of glasses plate 10.If the difference between the second directed force F 2 and the first directed force F 1 is greater than predetermined value, illustrate that reaction force F3 is excessive, be then unfavorable for being slidably matched both keeping; If the difference between the second directed force F 2 and the first directed force F 1 is less than predetermined value, illustrate under this operating mode, active force (reaction force F3) between cutting ring 200 and glasses plate 100 is too small, be then unfavorable for keeping the sealing between glasses plate 100 and cutting ring 200.So just according to the difference between the first directed force F 1 and the second directed force F 2 whether within predetermined scope, can judge whether the cooperation between cutting ring 200 and glasses plate 100 meets pre-provisioning request.
Step S500, obtains the ideal of cutting ring 200 output terminal by force parameter according to the first directed force F 1 and pumping pressure.
When pre-provisioning request can not be met, the ideal of cutting ring 200 output terminal can be obtained by force parameter according to the first directed force F 1 and pumping pressure.
According to above-mentioned principle and step, the ideal of cutting ring 200 output terminal can be obtained by force parameter, and then make the difference of the first directed force F 1 and the second directed force F 2 remain within prespecified range, the reaction force F3 of glasses plate 10 is made to remain within prespecified range, coordinate being slidably matched and being sealed and matched between cutting ring and glasses plate, ensure the good working state of dynamic sealing assembly.Certainly, concrete processing mode is not limited to by above-mentioned steps process, as after acquisition first directed force F 1, obtained the ideal of cutting ring 200 output terminal by force parameter according to the first directed force F 1 and pumping pressure; Again the ideal of cutting ring 200 output terminal is contrasted by force parameter and actual loading parameter, to judge whether the cooperation between cutting ring 200 and glasses plate 100 meets pre-provisioning request.Be appreciated that above-mentioned can be the lifting surface area of the end face of cutting ring 200 output terminal, outer diameter D 2 or internal diameter D1 by force parameter, etc.
In a specific embodiment, the inside edge diameter of annular contact surface S and outer edge diameter are respectively 235mm and 282mm; The end face outer diameter D 2 of the output terminal of cutting ring 200 is 240mm, and internal diameter D1 is shown in 235mm(Fig. 3).Under the pumping pressure of pumping mechanism is the operating mode of 35MPa, utilize said detecting system to detect, the pressure obtaining C point is the pressure of 8MPa, D point is 2.5MPa, if the pressure of A point is 0MPa.A pressure distribution function line of matching acquisition is carried out according to predetermined known function base; First directed force F 1 that can obtain between cutting ring 200 and glasses plate 100 according to this pressure distribution function line and annular contact surface S is again 10.5 tons.According to D1, D2 and the pumping pressure of the output terminal of cutting ring 200, obtaining the second directed force F 2 is 6.5 tons.Now, can determine that the reaction force F3 of glasses plate 100 is 3.5 tons.So just can determine, rub between glasses plate 100 and cutting ring 200 excessive, be unfavorable for being slidably matched.Therefore, the ideal of cutting ring 200 output terminal can be obtained according to the first directed force F 1 and pumping pressure by force parameter; Specifically, when supposing that reaction force F3 is zero, determine that the second desirable directed force F 2 is 10.5 according to the first directed force F 1; When keeping D1 constant, second directed force F 2 desirable according to this can obtain D2 should 242.8mm; Therefore, D2 can be optimized, increase 2.8mm, obtain the cutting ring after optimizing.
According to foregoing description, be appreciated that the first directed force F 1 and the second directed force F 2 all increase with the increase of pumping pressure, reduce with the reduction of pumping pressure; Therefore, if when pumping pressure change, the difference of the first directed force F 1 and the second directed force F 2 can remain within predetermined scope, makes reaction force F3 remain within predetermined scope, ensures the matching relationship between cutting ring 200 and glasses plate 100.
Based on above-described embodiment, when making the operating mode of above-mentioned pumping pressure 35MPa the operating mode of pumping pressure 5MPa into, use the cutting ring before optimizing, the second directed force F 2 obtained according to the method described above is 0.93 ton, first directed force F 1 is 1.5 tons, and the difference of the two is 0.57 ton; Use the cutting ring after optimizing, the first directed force F 1 obtained in the manner described above and the second directed force F 2 are respectively 1.46 tons and 1.5 tons, and the difference of the two is 0.4 ton.Like this, under the operating mode that pumping pressure is less, in the dynamic sealing assembly after optimization, reaction force F3 is relatively little; So just can make reaction force F3 remain on predetermined more among a small circle within.In optimal technical scheme, under the maximum pumping pressure operating mode of pumping mechanism, obtain the ideal of cutting ring 200 output terminal by force parameter, and size or the relevant parameter of force parameter determination cutting ring 200 is subject to according to this ideal, specifically can when cutting ring 200 input end end face remains unchanged, that determines cutting ring 200 output terminal is subject to force parameter, can also adjust the input end end face of cutting ring 200 and the relevant parameter of output terminal end face simultaneously.
Be appreciated that and utilize said detecting system and detecting method, dynamic sealing assembly can be made to obtain good performance by the preliminary dimension adjusting cutting ring 200 two ends, coordinate the relation being slidably matched and being sealed and matched.
According to foregoing description, be appreciated that obtaining pumping pressure can utilize the relevant device of pumping mechanism to obtain; Such as, can according to the parameter of the conveying cylinder of pumping mechanism, the gain of parameter driving the oil hydraulic cylinder of conveying cylinder motion.In the embodiment of the present invention, said detecting system can also comprise the pumping pressure transducer 500 of the pumping pressure detecting pumping mechanism.Utilize this pumping pressure transducer 500 can obtain pumping pressure.The detection position of pumping pressure transducer 500 can be positioned at suitable position, as in delivery pipe or conveying cylinder.Please refer to Fig. 4, in the present embodiment, on the detecting position of pumping pressure transducer 500 internal face setting in the feeding hole of glasses plate 100, the pumping pressure that pumping pressure transducer 500 can be made like this to obtain and the pressure of B point closer to, improve the accurate reliability detected.
Each step of above-mentioned detecting method can pass through other equipment and device process, also can be processed by the part of of detection system itself.Please refer to Fig. 4, in above-described embodiment, detection system can also comprise controller 600.This controller 600 can be electrically connected with intermediate pressure sensor 400 and pumping pressure transducer 500 respectively.The first directed force F 1 that this controller 600 bears for the end face obtaining cutting ring 200 input end according to testing signal and the predetermined policy of intermediate pressure sensor 400, pumping pressure transducer 500.
Above-mentioned predetermined policy can be: according to the testing signal of pumping pressure transducer 500, the testing signal of intermediate pressure sensor 400, the position of the first port of the pressure of the outer edge of predetermined annular contact surface S, annular contact surface S size and pressure detect aperture 300 adopts curve mode to obtain liquid film at annular contact surface S pressure distribution function line in the radial direction; The first directed force F 1 that the end face obtaining cutting ring 200 input end according to this pressure distribution function line and annular contact surface S size again bears.Its principle is described above, repeats no more.
In order to obtain in the second directed force F 2, embodiment, detection system can also comprise the input device 700 by force parameter of the output terminal for inputting cutting ring 200; And controller 600 is electrically connected with input device 700; Like this, the second directed force F 2 that the end face that controller 600 can also be used for the acquisition of the testing signal by force parameter and pumping pressure transducer 500 cutting ring 200 output terminal inputted according to input device 700 bears.
In addition, controller 600 can also contrast the first directed force F 1 and the second directed force F 2, judge whether the cooperation between cutting ring 200 and glasses plate 100 meets pre-provisioning request, or the ideal of cutting ring 200 output terminal can be obtained by force parameter according to the first directed force F 1 and pumping pressure, etc.
Please refer to Fig. 4, detection system can also comprise the output unit 800 be electrically connected with controller 600, and the data that controller 600 can obtain by output unit 800 export, to the utilization exporting data.
Be appreciated that, because cutting ring 200 is relative to glasses plate 100 to-and-fro motion, when intermediate pressure sensor 400 detects hydraulic pressure body pressure in predetermined intermediate pressure detect aperture 300, in intermediate pressure detect aperture 300, the foundation of liquid pressure needs predetermined time; Setting up speed to improve liquid pressure in intermediate pressure detect aperture 300, improving the accurate reliability that pressure detects.In above-described embodiment, detection system can also comprise fluid source, and this fluid source is communicated with each intermediate pressure detect aperture 300 by one-way valve.The aperture of intermediate pressure detect aperture 300 or the through-flow diameter of the first port are suitably set, when the first port communicates with the external world, less external flux can be had; When the first port is closed because cutting ring 200 coordinates with glasses plate 100, pressure can be set up quickly.Fluid source is communicated with each intermediate pressure detect aperture 300 by one-way valve, can avoids because the increase of pumping pressure makes the flow direction fluid source of intermediate pressure detect aperture 300.Fluid source can be accumulator or fluid pump, and outwards can provide the fluid of predetermined pressure.
For dynamic sealing assembly, glasses plate 100 can arrange more intermediate pressure detect aperture 300.In order to obtain pressure accurately, the hoop directional spreding of multiple intermediate pressure detect aperture 300 annularly surface of contact S can be made; Multiple intermediate pressure detect aperture 300 can be made equal with the outer edge of annular contact surface S or the distance of inside edge, like this, when obtaining the pressure in the radial precalculated position of annular contact surface S, can by obtain based on the plurality of intermediate pressure detect aperture 300 multiple pressure be averaged, get in or other process, with ensure obtain precalculated position pressure accurately and reliably.
Be appreciated that respective sensor is not limited to be connected with controller 600, the detection data that respective sensor obtains also can be exported by suitable mode, and by other devices or device processes.
In above-described embodiment, the spacing of the first port of intermediate pressure detect aperture 301 and the inside edge of annular contact surface S is L1; The spacing of the first port of intermediate pressure detect aperture 302 and the inside edge of annular contact surface S is L2; And L1 is 1/3 of annular contact surface S width; L2 is 2/3 of annular contact surface S width; Like this, the distance between A point and B point is divided into three parts by C point and D point.Intermediate pressure detect aperture 301 and intermediate pressure detect aperture 302 are also not limited to arrange in a manner described, also can arrange according to other modes (being less than L2 as L1 can be made), when C point and D point position can be determined, just can carry out matching according to known mode, obtain pressure distribution function line.
In pumping mechanism, relative to cutting ring, the glasses plate in dynamic sealing assembly is static part.In above-described embodiment, intermediate pressure detect aperture is arranged in glasses plate, can ensure that the pressure obtained is more reliable and stable like this, more be conducive to the degree of accuracy improving the pressure distribution function line obtained.Be appreciated that under specific circumstances, also intermediate pressure detect aperture 300 can be set by cutting ring 200, also can be obtained the pressure in precalculated position by the intermediate pressure detect aperture 300 detected in cutting ring 200.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. the dynamic sealing assembly of a pumping mechanism, comprise with the use of glasses plate (100) and cutting ring (200), annular contact surface (S) is formed between described glasses plate (100) and cutting ring (200), it is characterized in that, described glasses plate (100) or cutting ring (200) arrange at least one intermediate pressure detect aperture (300); Between the outer edge that first port of described intermediate pressure detect aperture (300) is positioned at described annular contact surface (S) and inside edge, the second port is positioned at the outer surface of described glasses plate (100) or cutting ring (200).
2. the dynamic sealing assembly of pumping mechanism according to claim 1, is characterized in that, described glasses plate (100) or cutting ring (200) at least arrange two described intermediate pressure detect aperture (300).
3. the dynamic sealing assembly of pumping mechanism according to claim 2, is characterized in that, the spacing of the first port of a described intermediate pressure detect aperture (300) and the inside edge of described annular contact surface (S) is L1; The spacing of the first port of intermediate pressure detect aperture (300) described in another and the inside edge of described annular contact surface (S) is L2; Described L1 is less than L2.
4. the dynamic sealing assembly of the pumping mechanism according to claim 1,2 or 3, is characterized in that, described glasses plate (100) arranges described intermediate pressure detect aperture (300).
5. the detection system of the dynamic sealing assembly of a pumping mechanism, it is characterized in that, comprising the dynamic sealing assembly of the pumping mechanism described in any one of Claims 1-4, also comprising the intermediate pressure sensor (400) for detecting the interior liquid pressure of described intermediate pressure detect aperture (300).
6. the detection system of the dynamic sealing assembly of pumping mechanism according to claim 5, is characterized in that, also comprises fluid source, and described fluid source is communicated with described intermediate pressure detect aperture (300) by one-way valve.
7. the detection system of the dynamic sealing assembly of pumping mechanism according to claim 5, is characterized in that, also comprises the pumping pressure transducer (500) of the pumping pressure detecting pumping mechanism.
8. the detection system of the dynamic sealing assembly of pumping mechanism according to claim 7, is characterized in that, also comprises the controller (600) be electrically connected with intermediate pressure sensor (400) and pumping pressure transducer (500) respectively;
Described controller (600) performs predetermined policy for the testing signal of the testing signal according to intermediate pressure sensor (400), pumping pressure transducer (500);
Described predetermined policy is: according to the testing signal of pumping pressure transducer (500), the testing signal of intermediate pressure sensor (400), the position of the first port of the pressure of the outer edge of predetermined described annular contact surface (S), described annular contact surface (S) size and described intermediate pressure detect aperture (300) adopts curve mode to obtain liquid film at annular contact surface (S) pressure distribution function line in the radial direction; The first active force (F1) that the end face obtaining described cutting ring (200) input end according to described pressure distribution function line and described annular contact surface (S) size again bears.
9. the detection system of the dynamic sealing assembly of pumping mechanism according to claim 8, is characterized in that, also comprises the input device (700) by force parameter of the output terminal for inputting described cutting ring (200); Described controller (600) is electrically connected with described input device (700); Described controller (600) is also for the second active force (F2) that the end face obtaining described cutting ring (200) output terminal by the testing signal of force parameter and described pumping pressure transducer (500) inputted according to described input device (700) bears.
10. the detection system of the dynamic sealing assembly of pumping mechanism according to claim 8, it is characterized in that, described controller (600) is also for obtaining the ideal of described cutting ring (200) output terminal by force parameter according to described first active force (F1) and described pumping pressure.
The detecting method of the dynamic sealing assembly of 11. 1 kinds of pumping mechanisms, is characterized in that, the dynamic sealing assembly that the dynamic sealing assembly of described pumping mechanism is the pumping mechanism described in any one of Claims 1-4;
This detecting method comprises the steps:
Position according to the first port of the pressure of the pumping pressure of pumping mechanism, the pressure of described intermediate pressure detect aperture (300), the outer edge of predetermined described annular contact surface (S), described annular contact surface (S) size and described pressure detect aperture (300) adopts curve mode to obtain liquid film at annular contact surface (S) pressure distribution function line in the radial direction;
The first active force (F1) that the end face obtaining described cutting ring (200) input end according to described pressure distribution function line and described annular contact surface (S) size again bears.
12., according to the detecting method of the dynamic sealing assembly of pumping mechanism described in claim 11, is characterized in that,
Also comprise:
The ideal of described cutting ring (200) output terminal is obtained by force parameter according to the first active force (F1) and described pumping pressure.
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| CN201310115630.9A CN103216439B (en) | 2013-04-03 | 2013-04-03 | The dynamic sealing assembly of pumping mechanism, the detection system of this dynamic sealing assembly and detecting method |
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| EP0052192A1 (en) * | 1980-11-14 | 1982-05-26 | Stetter GmbH | Apparatus for concrete pumps |
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| JPH08284810A (en) * | 1995-04-13 | 1996-10-29 | Ishikawajima Constr Mach Co | Operation controller for viscous fluid pump |
| DE19731335A1 (en) * | 1996-09-14 | 1998-03-19 | Putzmeister Ag | Viscous material pump with material issue container |
| CN101718265A (en) * | 2009-12-16 | 2010-06-02 | 三一重工股份有限公司 | Sealing component of pumping equipment, distribution valve assembly, pumping equipment and control method |
| CN203214303U (en) * | 2013-04-03 | 2013-09-25 | 三一重工股份有限公司 | Motive seal assembly of pumping mechanism and detecting system of motive seal assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10343802B4 (en) * | 2003-09-22 | 2007-12-06 | Schwing Gmbh | Piston slurry pump with continuous flow |
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| EP0052192A1 (en) * | 1980-11-14 | 1982-05-26 | Stetter GmbH | Apparatus for concrete pumps |
| CN86106617A (en) * | 1985-10-21 | 1987-06-10 | 博格-华纳工业制品公司 | The adaptive control system of mechanical seal device |
| JPH08284810A (en) * | 1995-04-13 | 1996-10-29 | Ishikawajima Constr Mach Co | Operation controller for viscous fluid pump |
| DE19731335A1 (en) * | 1996-09-14 | 1998-03-19 | Putzmeister Ag | Viscous material pump with material issue container |
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| CN203214303U (en) * | 2013-04-03 | 2013-09-25 | 三一重工股份有限公司 | Motive seal assembly of pumping mechanism and detecting system of motive seal assembly |
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| CN103216439A (en) | 2013-07-24 |
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