CN211476995U - Device for detecting elongation dispersity of whole-circle fastening bolt of cylinder cover of reciprocating pump - Google Patents
Device for detecting elongation dispersity of whole-circle fastening bolt of cylinder cover of reciprocating pump Download PDFInfo
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- CN211476995U CN211476995U CN202020578505.7U CN202020578505U CN211476995U CN 211476995 U CN211476995 U CN 211476995U CN 202020578505 U CN202020578505 U CN 202020578505U CN 211476995 U CN211476995 U CN 211476995U
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Abstract
The utility model discloses a whole circle of fastening bolt elongation dispersity detection device of reciprocating pump cylinder cap, including being used for adsorbing the adsorption component on the cylinder cap and installing on the adsorption component and can wind its rotatory cantilever beam with the adsorption component tie point, still install the range sensor who is used for measuring its and fastening bolt terminal surface distance on the cantilever beam, range sensor is unanimous along with radius of rotation and the centre of rotation that the cantilever beam is rotatory and radius and the centre of a circle that whole circle of fastening bolt encloses into the circle, and range sensor electricity connects signal acquisition system. Acquiring data of a distance measuring sensor by using a signal acquisition system, so that the dispersity of the elongation of the whole circle of assembled bolts can be obtained, and the bolts with larger and smaller elongation can be found; the bolt assembly process is improved, the dispersity of the elongation of the whole assembled bolt is reduced, and therefore the assembly quality is continuously improved.
Description
Technical Field
The utility model belongs to reciprocating pump cylinder cap assembly detection area especially relates to a reciprocating pump cylinder cap whole circle fastening bolt elongation dispersity detection device.
Background
The reciprocating pump realizes liquid pressurization by relying on the reciprocating motion of the piston cylinder and the piston. The piston cylinder of the large-scale reciprocating pump is usually connected with the cylindrical cylinder body and the circular cylinder cover by a whole circle of bolts, and the joint surface is reliably sealed.
Because the operation environment of the large reciprocating pump is complex and harsh, the bolt is required to have reliable connection performance and enough service life guarantee, and the large reciprocating pump can also withstand harsh environmental conditions and operation load changes. For example, when a diaphragm pump is used for conveying slurry, the connecting bolt of the cylinder cover is not only subjected to high pressure of solid-liquid-gas mixture in the cylinder cover, but also subjected to pressure pulsation caused by reciprocating motion of the piston. When the processing error of the cylinder body and the cylinder cover is large and the bolt assembling process is unreasonable, the load of individual bolts in a whole circle of bolts is overlarge, and the fatigue fracture is caused to occur prematurely under the complex vibration impact environment.
In the assembly of an actual reciprocating pump, a cylinder cover whole-circle bolt is usually pre-tightened by a hydraulic wrench according to a certain sequence and torque requirements, and the assembly precision can only depend on the precision of the hydraulic wrench, so that the problems of overlarge local bolt load and premature fracture in the working process are caused. At present, a quality detection device for assembling a full-circle bolt with operability and higher precision aiming at an actual large-scale reciprocating pump is lacked.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to carry out the detection of assembly quality to large-scale reciprocating pump cylinder cap whole circle bolt to it has maneuverability and higher accuracy to make the detection.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a reciprocating pump cylinder cap whole circle fastening bolt elongation dispersity detection device, is including being used for adsorbing the adsorption component on the cylinder cap and installing on the adsorption component and can wind its rotatory cantilever beam with the adsorption component tie point, still install the range sensor who is used for measuring its and fastening bolt terminal surface distance on the cantilever beam, range sensor is consistent along with the radius of rotation and the centre of rotation of cantilever beam and the radius and the centre of a circle that whole circle fastening bolt encloses into the circle, just range sensor electricity connects signal acquisition system.
Thus, the cantilever beam can be adsorbed on the cylinder cover through the adsorption component, and can rotate, when rotating, the distance measuring sensor on the cantilever beam is always positioned right above the end face of the fastening bolt, the signal acquisition system is used for acquiring the data of the distance measuring sensor, the distance between the distance measuring sensor and the fastening bolt can be measured, the nut matched with the fastening bolt is tightened for many times, the distance between the distance measuring sensor and the end face of the fastening bolt under different conditions can be measured, so as to obtain the relative elongation of the fastening bolt, the dispersion degree of the elongation of the whole circle of assembled bolt is obtained through the data statistical analysis of the elongation, the bolts with larger and smaller elongation are found, so that the bolt assembly process is improved, the dispersion degree of the elongation of the whole circle of assembled bolt is reduced, the assembly quality is continuously improved, when the improvement is carried out, the tightening torque can be increased aiming at the bolts with smaller elongation, and in the pre-tightening process, a proper amount of tightening torque can be reduced, and finally, detection verification is carried out once through the detection device.
Preferably, the adsorption assembly comprises a regular triangle frame body consisting of three rod pieces connected end to end, and the bottoms of three angular positions of the frame body are respectively fixed with a magnet piece for adsorbing the cylinder cover.
Therefore, the magnet piece and the frame body form the adsorption assembly, the magnetism of the magnet piece is adsorbed on the cylinder cover, and the magnetic adsorption cylinder cover has the advantages of simple structure and convenience in operation.
As optimization, the support body is horizontally provided with a connecting arm, the connecting arm is provided with a bearing mounting hole, a rotating shaft perpendicular to the connecting arm is rotatably connected with the connecting arm through a bearing mounted in the bearing mounting hole, one end of the cantilever beam is vertically connected with the rotating shaft and can rotate along with the rotating shaft, and the distance measuring sensor is connected to the other end of the cantilever beam.
Therefore, the connecting arm and the rotating shaft are arranged, the rotating shaft is rotatably connected with the connecting arm through the bearing, the cantilever beam is vertically connected with the rotating shaft, the rotating motion of the cantilever beam can be realized, and the distance measuring sensor on the cantilever beam can be always positioned right above the whole circle of fastening bolts to measure the distance of the fastening bolts.
Preferably, the signal acquisition system comprises a preamplifier, a signal acquisition instrument and an industrial personal computer, and the distance measurement sensor is an eddy current displacement sensor which is electrically connected with the preamplifier, the signal acquisition instrument and the industrial personal computer in sequence.
Therefore, the data of the distance measuring sensor is acquired through a signal acquisition system consisting of the preamplifier, the signal acquisition instrument and the industrial personal computer, and the required bolt elongation dispersity is obtained through statistical analysis.
Preferably, the rotating shaft penetrates through the bearing inner ring and is fixedly connected with the bearing inner ring, the cantilever beam is provided with a through hole and is sleeved on the rotating shaft, the rotating shaft is further sleeved with an upper pressing plate and a lower pressing plate, and the upper pressing plate and the lower pressing plate are respectively located on the outer side of the cantilever beam and the outer side of the connecting arm so as to tightly press the cantilever beam on the connecting arm.
Drawings
FIG. 1 is a top view of a detection device according to an embodiment of the present invention;
FIG. 2 is a side view of a detection device according to an embodiment of the present invention;
fig. 3 is a partial schematic view of a detection device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In the specific implementation: referring to fig. 1 to 3, the device for detecting the assembly dispersion degree of the whole circle of the fastening bolt of the cylinder cover of the reciprocating pump comprises an adsorption component adsorbed on the cylinder cover 2 and a cantilever beam 6 which is installed on the adsorption component and can rotate around the connection point of the adsorption component and the adsorption component, wherein a distance measuring sensor 7 used for measuring the end face distance between the cantilever beam 6 and the fastening bolt 1 is further installed on the cantilever beam 6, the radius and the circle center of the distance measuring sensor 7 rotating along with the cantilever beam 6 are consistent with the radius and the circle center of a circle surrounded by the whole circle of the fastening bolt, and the distance measuring sensor 7 is electrically connected with a signal acquisition.
The cantilever beam can be adsorbed on the cylinder cover through the adsorption component, the cylinder cover is fixedly connected with the cylinder body 8 through the whole circle of bolts, the cantilever beam can rotate, when the cantilever beam rotates, the distance measuring sensor on the cantilever beam is always positioned right above the end face of the fastening bolt, the distance measuring sensor can be used for measuring the distance between the cantilever beam and the fastening bolt by utilizing a signal acquisition system to acquire data of the distance measuring sensor, the fastening bolt is tightened for multiple times, the distance between the distance measuring sensor and the fastening bolt under different torque conditions can be measured, so that the relative elongation of the fastening bolt under different torque conditions can be obtained, the dispersion degree of the elongation of the whole circle of the assembled bolt can be obtained through data statistical analysis of the elongation, and the bolts with larger elongation and smaller; the bolt assembly process is improved, the dispersity of the elongation of the whole assembled bolt is reduced, and therefore the assembly quality is continuously improved.
Preferably, the adsorption assembly comprises a regular triangle frame body 4 consisting of three rod pieces connected end to end, and the bottoms of three angular positions of the frame body 4 are respectively fixed with a magnet piece 3 adsorbed on the cylinder cover.
Therefore, the magnet piece and the frame body form the adsorption assembly, the magnetism of the magnet piece is adsorbed on the cylinder cover, and the magnetic adsorption cylinder cover has the advantages of simple structure and convenience in operation.
As optimization, the support body 4 is provided with a connecting arm 5 horizontally, the connecting arm 5 is provided with a bearing mounting hole, a rotating shaft 5.2 perpendicular to the connecting arm 5 is rotatably connected with the connecting arm 5 through a bearing 5.3 arranged in the bearing mounting hole, one end of the cantilever beam 6 is perpendicularly connected with the rotating shaft 5.2 and can rotate along with the rotating shaft, and the distance measuring sensor is connected with the other end of the cantilever beam.
Therefore, the connecting arm and the rotating shaft are arranged, the rotating shaft is rotatably connected with the connecting arm through the bearing, the cantilever beam is vertically connected with the rotating shaft, the rotating motion of the cantilever beam can be realized, and the distance measuring sensor on the cantilever beam can be always positioned right above the whole circle of fastening bolts to measure the distance of the fastening bolts.
Preferably, the signal acquisition system comprises a preamplifier 9, a signal acquisition instrument 10 and an industrial personal computer 11, and the distance measurement sensor is an eddy current displacement sensor which is electrically connected with the preamplifier, the signal acquisition instrument and the industrial personal computer in sequence.
Therefore, the data of the distance measuring sensor is acquired through a signal acquisition system consisting of the preamplifier, the signal acquisition instrument and the industrial personal computer, and the required bolt elongation dispersity is obtained through statistical analysis.
As an optimization, the rotating shaft 5.2 penetrates through the inner ring of the bearing 5.3 and is fixedly connected with the inner ring, the cantilever beams 6 are provided with through holes and are sleeved on the rotating shaft, the rotating shaft is further sleeved with an upper pressing plate 5.1 and a lower pressing plate 5.4, the upper pressing plate 5.1 and the lower pressing plate 5.4 are respectively located on the outer side of each cantilever beam and the outer side of each connecting arm so as to tightly press the cantilever beams on the connecting arms, in the embodiment, the cantilever beams can be arranged in a three mode, the upper and lower overlapping portions are sleeved on the rotating shaft, the three cantilever beams are arranged at intervals of 120 degrees, a distance measuring sensor can be arranged on each cantilever beam for detection, when a circle of rotation is carried out on a whole circle of bolts, 3 cantilever beams are rotated simultaneously, three groups of data can be obtained in one step.
Adopt reciprocating pump cylinder cap whole circle fastening bolt elongation dispersity detection device detect, including following step:
step a: firstly, a whole circle of fastening bolts are screwed from the inner side of a threaded hole on a cylinder body to the outer side of the cylinder body, the fastening bolts are screwed in the bottom, then through holes in a cylinder cover correspond to the fastening bolts one by one, the cylinder cover is locked on the cylinder body through the matching of nuts and the fastening bolts, finally, 10% of rated torque is applied to tighten the nuts one by one according to a preset loading sequence, and the bolts at the moment are taken as an initial extension state;
step b: assembling the whole circle of fastening bolts of the reciprocating pump cylinder cover with a dispersion degree detection device, and installing the dispersion degree detection device on the cylinder cover, so that the adsorption component is adsorbed on the cylinder cover, and the rotation center of the cantilever beam is positioned at the center of a circle surrounded by the whole circle of fastening bolts;
step c: manually rotating the cantilever beam at a low speed, and acquiring the distance between the end surface of each bolt rod part and the distance measuring sensor recorded by the distance measuring sensor through a signal acquisition system in the rotating process;
step d: c, after the distances between the end surfaces of the bolt rod parts of the complete circle and the distance measuring sensors are collected in the step c, the nuts of the complete circle are continuously screwed one by one according to a preset loading sequence by 30% of rated torque, and the step c is repeated to collect the distances between the end surfaces of the bolt rod parts and the distance measuring sensors;
step e: d, after the distances between the end surfaces of the bolt rod parts of the complete circle and the distance measuring sensors are collected in the step d, the nuts of the complete circle are continuously screwed one by one according to a preset loading sequence by using a rated torque of 60%, and the step c is repeated, and the distances between the end surfaces of the bolt rod parts and the distance measuring sensors are collected;
step f: after the distances between the end surfaces of the bolt rod parts of the complete circle and the ranging sensors are collected in the step e, the nuts of the complete circle are continuously screwed one by one according to a preset loading sequence by 100 percent of rated torque, and the step c is repeated to collect the distances between the end surfaces of the bolt rod parts and the ranging sensors;
step g: after step f is completed, counting distances between the end surfaces of the bolt shank and the distance measuring sensors corresponding to 10%, 30%, 60% and 100% rated torque states, which are respectively marked as d1, d2, d3 and d4, taking Δ d1= d1-d2, Δ d1 as the elongation of the fastening bolt at 30% rated torque, taking Δ d2= d1-d3, Δ d2 as the elongation of the fastening bolt at 60% rated torque, taking Δ d3= d1-d4, and Δ d3 as the elongation of the fastening bolt at 100% rated torque, and statistically analyzing the degrees of dispersion of Δ d1, Δ d2 and Δ d3 of each fastening bolt to obtain the elongation of the shank of the whole circle of the bolt.
Therefore, by the method, the accurate measurement of the elongation of the bolt before and after the whole circle of the pre-tightened bolt of the piston cylinder gland of the large reciprocating pump is realized, so that the guarantee is provided for accurately obtaining the elongation of the whole circle of the bolt and evaluating the dispersion degree of the elongation, necessary original data is provided for the optimization of the assembly process, and the method has the advantages of simple structure, low cost, high measurement accuracy and strong repeatability.
Claims (4)
1. The utility model provides a reciprocating pump cylinder cap whole circle fastening bolt elongation dispersity detection device which characterized in that: including being used for adsorbing the adsorption component on the cylinder cap and installing on the adsorption component and can be around its cantilever beam rotatory with the adsorption component tie point, still install the range sensor who is used for measuring its and fastening bolt terminal surface distance on the cantilever beam, range sensor is consistent with radius and the centre of a circle that whole circle fastening bolt encloses along with the rotatory radius of rotation and the centre of rotation of cantilever beam, just range sensor electricity connects signal acquisition system, signal acquisition system includes preamplifier, signal acquisition appearance and industrial computer, and range sensor is eddy current displacement sensor, and it is connected with preamplifier, signal acquisition appearance and industrial computer electricity in proper order.
2. The device for detecting the degree of dispersion of the elongation of the whole-ring fastening bolt of the cylinder head of the reciprocating pump according to claim 1, wherein: the adsorption assembly comprises a regular triangle frame body consisting of three rod pieces connected end to end, and the bottoms of three angular positions of the frame body are respectively fixed with a magnet piece used for being adsorbed on the cylinder cover.
3. The device for detecting the degree of dispersion of the elongation of the whole-ring fastening bolt of the cylinder head of the reciprocating pump according to claim 2, wherein: the frame body is provided with a connecting arm in an upper horizontal mode, the connecting arm is provided with a bearing mounting hole, a rotating shaft perpendicular to the connecting arm is rotatably connected with the connecting arm through a bearing mounted in the bearing mounting hole, one end of the cantilever beam is perpendicularly connected with the rotating shaft and can rotate along with the rotating shaft, and the distance measuring sensor is connected to the other end of the cantilever beam.
4. The device for detecting the degree of dispersion of the elongation of the whole-ring fastening bolt of the cylinder head of the reciprocating pump according to claim 3, wherein: the rotating shaft penetrates through the bearing inner ring and is fixedly connected with the bearing inner ring, a through hole is formed in the cantilever beam and is sleeved on the rotating shaft, an upper pressing plate and a lower pressing plate are further sleeved on the rotating shaft, and the upper pressing plate and the lower pressing plate are respectively located on the outer side of the cantilever beam and the outer side of the connecting arm so as to tightly press the cantilever beam on the connecting arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020578505.7U CN211476995U (en) | 2020-04-17 | 2020-04-17 | Device for detecting elongation dispersity of whole-circle fastening bolt of cylinder cover of reciprocating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020578505.7U CN211476995U (en) | 2020-04-17 | 2020-04-17 | Device for detecting elongation dispersity of whole-circle fastening bolt of cylinder cover of reciprocating pump |
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| Publication Number | Publication Date |
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| CN211476995U true CN211476995U (en) | 2020-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020578505.7U Active CN211476995U (en) | 2020-04-17 | 2020-04-17 | Device for detecting elongation dispersity of whole-circle fastening bolt of cylinder cover of reciprocating pump |
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|---|---|
| CN (1) | CN211476995U (en) |
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- 2020-04-17 CN CN202020578505.7U patent/CN211476995U/en active Active
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