Arrangement method of anti-vibration test sample machine of valve remote transmission mechanism and anti-vibration test sample machine

Abstract

The application discloses a kind of valve remote transmission mechanism's anti-shock test sample machine arrangement method and anti-shock test sample machine, the method comprises the following steps: the parts of valve remote transmission mechanism is arranged on anti-shock test table, the part is for realizing the preset easy-to-fail part of torque transmission from input end to output end of valve remote transmission mechanism, obtain the anti-shock test sample machine of valve remote transmission mechanism, and the anti-shock test sample machine is used to realize the torque transmission from input end to output end.The arrangement method in the application can select a kind of covering valve remote transmission mechanism's anti-shock test sample machine, to carry out anti-shock test and verify its anti-shock performance, to verify the anti-shock performance of valve remote transmission mechanism with same design principle.Effectively solved the problem that previous anti-shock test cannot be carried out on each valve remote transmission mechanism, effectively solved the problem of valve remote transmission mechanism anti-shock identification, to improve the safety of nuclear power plant operation provides better guarantee.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of valve remote transmission mechanism design, and particularly relates to a layout method of an anti-seismic test sample machine of a valve remote transmission mechanism and the anti-seismic test sample machine. BACKGROUND

[0002] A valve remote transmission mechanism is a mechanical transmission mechanism for transmitting force on a valve driver or handwheel to a valve stem to open and close a valve. The valve remote transmission mechanism is used in cases where the valve body is not conveniently arranged for operation, so that the operator can operate the valve from a remote location. The valve remote transmission mechanism is a mechanical device for opening and closing the valve. When the valve has a high anti-seismic level, the matching valve remote transmission mechanism is required to have the same anti-seismic level. Currently, anti-seismic 1A class valves are required to ensure their functionality under seismic conditions. If the valve is a remote valve, the valve remote transmission mechanism used with it should also ensure its operability under seismic conditions to meet the functionality of the valve.

[0003] Currently, the anti-seismic performance of anti-seismic 1A class valve remote transmission mechanisms is verified by mechanical performance analysis, which cannot guarantee their operability under seismic conditions.

[0004] The valve remote transmission mechanism is composed of many components, and due to different conditions such as valve arrangement position, valve opening and closing torque, and wall thickness, the composition, shape, and size of different valve remote transmission mechanisms may differ. It is not practical to conduct anti-seismic tests on each valve. SUMMARY

[0005] The present application solves the technical problem of the prior art by providing a layout method of an anti-seismic test sample machine of a valve remote transmission mechanism and the anti-seismic test sample machine, which effectively solves the problem of anti-seismic identification of the valve remote transmission mechanism and verifies the anti-seismic performance of the same type (using the same design principle) valve remote transmission mechanism through anti-seismic tests.

[0006] The technical solution adopted to solve the technical problem of the present application is to provide a layout method of an anti-seismic test sample machine of a valve remote transmission mechanism, comprising the following steps:

[0007] The components of the valve remote transmission mechanism are arranged on the anti-seismic test bench, the components are pre-set components prone to failure for transmitting the input torque of the valve remote transmission mechanism to the output, and an anti-seismic test sample machine of the valve remote transmission mechanism is obtained, which is used to transmit the input torque to the output.

[0008] Preferably, the layout method specifically comprises:

[0009] The failure mode of the valve remote transmission mechanism is analyzed by the fault tree analysis method to obtain the bottom failure factors, which are the reasons for the failure under the earthquake working condition.

[0010] Preferably, the failure mode of the valve remote transmission mechanism includes one or more of the following: jamming of the universal joint of the valve remote transmission mechanism, loosening of the support, and friction between the transmission shaft and the wall sleeve.

[0011] Preferably, the bottom failure factors include one or more of the following: type and number of parts of the valve remote transmission mechanism, number of arrangement inflection points, and arrangement span.

[0012] Preferably, the number of arrangement inflection points is at least 3.

[0013] Preferably, the preset parts prone to failure include all parts prone to failure of different valve remote transmission mechanisms in actual application.

[0014] Preferably, the preset parts prone to failure include one or more of the following: transmission seat, wall sleeve, support, transmission shaft, universal joint, steering device, and torque multiplier.

[0015] Preferably, the transmission shaft includes a flexible shaft and a rigid shaft, wherein,

[0016] The length of the flexible shaft is at least 1000 mm, and the length of the rigid shaft is at least 1000 mm.

[0017] At least one inflection point is provided between the flexible shaft and the rigid shaft, and at least one inflection point is provided between the rigid shafts, achieving full coverage of inflection point connection types.

[0018] Preferably, the arrangement method specifically includes:

[0019] The first support is provided to support the rigid shaft, and the second support is provided to support the flexible shaft.

[0020] Preferably, the transmission shaft includes a rigid shaft, the universal joint is connected with the rigid shaft, and the two are used together to absorb installation errors.

[0021] Preferably, the arrangement method specifically includes: setting the universal joint at the limit installation angle to make it in the most failure-prone position.

[0022] Preferably, the preset parts prone to failure include:

[0023] On the basis of achieving full type coverage of parts prone to failure, at least one part prone to failure of each type should be provided.

[0024] Preferably, the arrangement method specifically comprises: arranging sensors before and after each component of the anti-seismic test sample machine, the sensors being used to collect displacement and torque. The torque transmission efficiency and displacement of each component in the test are determined, and the sensors do not affect the transmission of the entire device.

[0025] The application further provides an anti-seismic test sample machine of a valve remote transmission mechanism, which is obtained by the arrangement method.

[0026] The application has the following beneficial effects:

[0027] The arrangement method in the application can select an anti-seismic test sample machine of a valve remote transmission mechanism, and the anti-seismic performance of the valve remote transmission mechanism is verified through anti-seismic test, so as to verify the anti-seismic performance of valve remote transmission mechanisms with the same design principle. The problem that anti-seismic test cannot be performed on each valve remote transmission mechanism in the prior art is effectively solved, the problem of anti-seismic identification of valve remote transmission mechanisms is effectively solved, and better protection is provided for improving the operation safety of nuclear power plants. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 FIG. 1 is a structural schematic diagram of an anti-seismic test sample machine of a valve remote transmission mechanism in Embodiment 2 of the application. DETAILED DESCRIPTION

[0029] In order for those skilled in the art to better understand the technical solutions of the application, the application is further described in detail below with reference to the drawings and specific embodiments.

[0030] The embodiments of the application are described in detail below, and examples of the embodiments are shown in the drawings, in which the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the application, and cannot be understood as a limitation on the application.

[0031] Embodiment 1

[0032] The embodiment provides an arrangement method of an anti-seismic test sample machine of a valve remote transmission mechanism, comprising the following steps:

[0033] The components of the valve remote transmission mechanism are arranged on an anti-seismic test table, the components being preset components prone to failure for realizing torque transmission from an input end to an output end of the valve remote transmission mechanism, to obtain an anti-seismic test sample machine of the valve remote transmission mechanism, the anti-seismic test sample machine being used to realize torque transmission from the input end to the output end.

[0034] The embodiment further provides an anti-seismic test sample machine of a valve remote transmission mechanism, which is obtained by the arrangement method.

[0035] The embodiment has the following beneficial effects:

[0036] The arrangement method in the embodiment can select an anti-seismic test prototype of a covering valve remote transmission mechanism, and perform anti-seismic test to verify the anti-seismic performance of the valve remote transmission mechanism, so as to verify the anti-seismic performance of valve remote transmission mechanisms with the same design principle. The arrangement method effectively solves the problem that the anti-seismic test cannot be performed on each valve remote transmission mechanism in the past, effectively solves the problem of anti-seismic identification of the valve remote transmission mechanism, and provides better protection for improving the operation safety of the nuclear power plant.

[0037] Embodiment 2

[0038] As shown in Figure 1 The arrangement method of the anti-seismic test prototype of the valve remote transmission mechanism comprises the following steps:

[0039] The components of the valve remote transmission mechanism are arranged on the anti-seismic test table, the components are preset components prone to failure for realizing torque transmission from the input end to the output end of the valve remote transmission mechanism, and an anti-seismic test prototype of the valve remote transmission mechanism is obtained, which is used to realize torque transmission from the input end to the output end.

[0040] Preferably, the arrangement method specifically comprises:

[0041] The failure modes of the valve remote transmission mechanism are analyzed by the fault tree analysis method, and the bottom failure factors are obtained, the bottom failure factors are the reasons for failure under the seismic working condition, and the preset components prone to failure are arranged according to the bottom failure factors.

[0042] Preferably, the failure modes of the valve remote transmission mechanism include one or more of the following: jamming of the universal coupling of the valve remote transmission mechanism, loosening of the support, and friction between the transmission shaft and the wall sleeve.

[0043] Preferably, the bottom failure factors include one or more of the following: the type and number of components of the valve remote transmission mechanism, the number of arranged inflection points, and the arrangement span.

[0044] Preferably, the number of arranged inflection points is at least 3.

[0045] Preferably, the preset components prone to failure include all components prone to failure of different valve remote transmission mechanisms in actual application. The more the types and numbers of components of the valve remote transmission mechanism, the greater the probability of failure of the valve remote transmission mechanism. Therefore, the anti-seismic test prototype of the valve remote transmission mechanism includes all components in actual application.

[0046] Preferably, the preset components prone to failure include one or more of the following: a transmission seat, a wall sleeve, a support, a transmission shaft, a universal coupling, a diverter, and a torque multiplier.

[0047] Preferably, the transmission shaft comprises: a flexible shaft, a rigid shaft, wherein,

[0048] The length of the flexible shaft is at least 1000 mm, and the length of the rigid shaft is at least 1000 mm.

[0049] The flexible shaft itself has at least one bending inflection point, the flexible shaft and the rigid shaft have at least one inflection point, and the rigid shaft and the rigid shaft have at least one inflection point, so as to realize full coverage of the inflection point connection type.

[0050] The larger the arrangement span is, the greater the failure probability is. The span of the valve remote transmission mechanism is realized by adjusting the length of the transmission shaft. In the embodiment, the lengths of the flexible shaft and the rigid shaft should be at least 1000 mm. The transmission torque efficiency per unit length of the transmission shaft is monitored.

[0051] Preferably, the arrangement method specifically comprises:

[0052] The first support member is arranged to support the rigid shaft, and the second support member is arranged to support the flexible shaft. The first support member is arranged to support and fix the rigid shaft, and the second support member is arranged to support and fix the flexible shaft without affecting the transmission.

[0053] Preferably, the transmission shaft comprises a rigid shaft, and the universal coupling is connected with the rigid shaft and used in conjunction with the rigid shaft to realize the absorption of installation errors.

[0054] Preferably, the arrangement method specifically comprises: arranging the universal coupling at a limit installation angle so that the universal coupling is in a most failure-prone position.

[0055] Preferably, the pre-set failure-prone components include:

[0056] On the basis of realizing full-type coverage of failure-prone components, at least one failure-prone component of each type should be arranged.

[0057] Preferably, the arrangement method specifically comprises: arranging sensors before and after each component of the anti-vibration test sample machine, and the sensors are used to collect displacement and torque. The torque transmission efficiency and displacement of each component in the test are determined, and the sensors do not affect the transmission of the whole device.

[0058] The embodiment also provides an anti-vibration test sample machine of a valve remote transmission mechanism, which is obtained by the above-mentioned arrangement method.

[0059] Specifically, the anti-seismic test machine of the valve remote transmission mechanism in the embodiment has the structure including the electric actuator 1, the transmission seat 2, the wall bushing 3, the flexible shaft 5, the diverter 6, the universal coupling 7, the rigid shaft 9, the diverter 18, the torque multiplier 10, and the resistance loading device 11 connected in sequence on the anti-seismic test bench 13. The flexible shaft support 4 is connected with the flexible shaft 5 but does not affect the transmission, and is used for supporting the flexible shaft 5. The rigid shaft support 8 is connected with the rigid shaft 9 but does not affect the transmission, and is used for supporting the rigid shaft 9. The flexible shaft 5 is bent as an inflection point, the diverter 6 is an inflection point, and the diverter 18 is an inflection point. The sensor 12 is arranged between the transmission seat 2 and the wall bushing 3, the sensor 14 is arranged between the wall bushing 3 and the flexible shaft support 4, the sensor 15 is arranged between the flexible shaft 5 and the diverter 6, the sensor 16 is arranged between the rigid shaft 9 and the diverter 18, and the sensor 17 is arranged between the diverter 18 and the torque multiplier 10. The above-mentioned sensors are used for monitoring data in the test process and do not contact the valve remote transmission mechanism body. The above-mentioned components include all components prone to failure of the valve remote transmission mechanism. The whole anti-seismic test machine is arranged on the anti-seismic test bench 13. The resistance loading device 11 can adjust the torque size to simulate the valve opening and closing torque.

[0060] Specifically, the arrangement method of the embodiment is as follows:

[0061] 1. According to Figure 1 , the components that can be used by the valve remote transmission mechanism are connected in series according to the actual situation. The universal coupling 7 is arranged at a certain angle to simulate the arrangement type with the lowest transmission efficiency of the universal coupling.

[0062] 2. According to Figure 1 , the span of the remote transmission shaft is maximized under the condition that the size of the anti-seismic test bench 13 allows.

[0063] 3. According to Figure 1 , the number of inflection points of the remote transmission shaft is maximized under the condition that the size of the anti-seismic test bench 13 allows. The flexible shaft 5 is arranged with one 90° corner, the combination of the rigid shaft 9 and the flexible shaft 5 is arranged with one 90° corner, and the rigid shaft 9 is arranged with one 90° corner, so that three inflection points are arranged. The arrangement type of the remote transmission mechanism that is most prone to failure in actual work is simulated.

[0064] Through the arrangement method of the anti-seismic test machine of the valve remote transmission mechanism in the embodiment, the anti-seismic test machine of the valve remote transmission mechanism is obtained, and the anti-seismic test is performed. If the anti-seismic level is met, it is proved that the valve remote transmission mechanisms with the same design principle all meet the corresponding anti-seismic level.

[0065] The arrangement method of the anti-seismic test sample machine of the valve remote transmission mechanism in the embodiment is that, by analyzing the failure mode of the valve remote transmission mechanism, the bottom failure factors are obtained, all the most unfavorable factors leading to the failure of the valve remote transmission mechanism under the earthquake working condition are assembled in series to form a kind of covering valve remote transmission mechanism arrangement type, and the anti-seismic test is carried out to verify the anti-seismic performance, and then it is explained that the valve remote transmission mechanisms adopting the same design principle have the same anti-seismic performance.

[0066] It can be understood that the above embodiments are only exemplary embodiments adopted for illustrating the principles of the present application, and the present application is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and essence of the present application, and these modifications and improvements are also considered as the protection scope of the present application.

Claims

1. An arrangement method of a shock test prototype of a valve remote transmission mechanism, characterized by, The method comprises the following steps: The parts of the valve remote transmission mechanism are arranged on the anti-seismic test table, and the arrangement method specifically comprises: The failure modes of the valve remote transmission mechanism are analyzed by the fault tree analysis method to obtain bottom failure factors, the bottom failure factors are the reasons for failure under the seismic working condition, and the pre-set parts prone to failure are arranged according to the bottom failure factors; The failure modes of the valve remote transmission mechanism include one or more of the following: jamming of the universal coupling of the valve remote transmission mechanism, loosening of the support, and friction between the transmission shaft and the wall sleeve; The bottom failure factors include one or more of the following: the type and number of parts of the valve remote transmission mechanism, the number of arranged inflection points, and the arrangement span; The parts are pre-set parts prone to failure for realizing the transmission of the input torque of the valve remote transmission mechanism to the output end, and an anti-seismic test sample of the valve remote transmission mechanism is obtained, which is used to realize the transmission of the input torque to the output end, and the pre-set parts prone to failure include all parts prone to failure of different valve remote transmission mechanisms in actual application.

2. The arrangement method of the anti-vibration test sample machine of the valve remote transmission mechanism according to claim 1, characterized in that, The number of arranged inflection points is at least 3.

3. The arrangement method of the anti-vibration test sample machine of the valve remote transmission mechanism according to any one of claims 1-2, characterized in that, The pre-set parts prone to failure include one or more of the following: a transmission seat, a wall sleeve, a support, a transmission shaft, a universal coupling, a diverter, and a torque multiplier.

4. The arrangement method of the anti-vibration test sample machine of the valve remote transmission mechanism according to claim 3, characterized in that, The transmission shaft includes a flexible shaft and a rigid shaft, wherein The length of the flexible shaft is at least 1000 mm, and the length of the rigid shaft is at least 1000 mm; At least one inflection point is arranged between the flexible shaft and the rigid shaft, and at least one inflection point is arranged between the rigid shafts, so as to realize full coverage of the inflection point connection type.

5. The arrangement method of the anti-vibration test sample machine of the valve remote transmission mechanism according to claim 4, characterized in that, The arrangement method specifically comprises: A first support is arranged to support the rigid shaft, and a second support is arranged to support the flexible shaft.

6. The arrangement method of the anti-vibration test sample machine of the valve remote transmission mechanism according to claim 3, wherein, The arrangement method specifically comprises:

7. The arrangement method of the anti-vibration test sample machine of the valve remote transmission mechanism according to any one of claims 1 to 2 and 4 to 6, characterized in that, The pre-set parts prone to failure include: On the basis of realizing full-type coverage of the parts prone to failure, at least one part prone to failure of each type should be arranged.

8. The arrangement method of the anti-vibration test sample machine of the valve remote transmission mechanism according to any one of claims 1 to 2 and 4 to 6, characterized in that, The arrangement method specifically comprises:

9. A shock test prototype of a valve remote transmission mechanism, characterized by, Sensors are arranged before and after each part of the anti-seismic test sample, and the sensors are used to collect displacement and torque. The anti-seismic test sample is obtained by the arrangement method of any one of claims 1-8.

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