CN110967180A - Valve detection test bed and valve detection control method - Google Patents
Valve detection test bed and valve detection control method Download PDFInfo
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- CN110967180A CN110967180A CN201911169453.6A CN201911169453A CN110967180A CN 110967180 A CN110967180 A CN 110967180A CN 201911169453 A CN201911169453 A CN 201911169453A CN 110967180 A CN110967180 A CN 110967180A
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- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
Abstract
The invention discloses a valve detection test bed and a valve detection control method, relates to the technical field of valve detection, and can perform a pressure test of a valve and a service life test of the valve on the same test bed, reduce equipment required for the detection test of the valve and improve the applicability of the equipment. The device comprises a rack, wherein an air source is arranged on the rack, and a first test mechanism and a second test mechanism which are respectively communicated with the air source are arranged on the rack, the first test mechanism comprises a first air path communicated with the air source, a first air source second connecting piece, a first manual ball valve and a pressure gauge are sequentially arranged on the first air path, and the first air path is also used for connecting a first valve to be tested; the second test mechanism comprises a second air path communicated with the air source, a second air source duplex piece, a second manual ball valve, a five-port two-position electromagnetic valve and a double-acting cylinder are sequentially arranged on the second air path, and the five-port two-position electromagnetic valve is respectively connected with a cylinder barrel and a telescopic rod of the double-acting cylinder and is also used for being connected with a second tested valve.
Description
Technical Field
The invention relates to the technical field of valve detection, in particular to a valve detection test bed and a valve detection control method.
Background
The valve is used as an important part for performing on-off regulation in the gas circuit pipeline, in order to ensure the working safety of the gas circuit pipeline, before the valve is installed, the working strength and air tightness test (pressure test) is required to be performed on the valve, the state of the target pressure detection valve is introduced into the valve, the state is used for detecting the compactness of the valve body and the valve cover and the pressure resistance of the whole shell including the joint of the valve body and the valve cover, in addition, the service life test is required to be performed on the valve, and the service life of the valve is detected through repeated high-pressure impact, the limited service life of the valve is guided, and the safety of the gas circuit pipeline provided with the valve is improved. The pressure test and the life test of the valve are unnecessary and few test items, and because the detection requirements required by the pressure test and the life test are different, the test operation is usually difficult to be simultaneously carried out in the same device.
Among the prior art, including the test device that can carry out pressure test to the valve, also including the test device that can carry out life test to the valve, however, if will carry out pressure test and life test to the valve, the user need purchase two kinds of test devices simultaneously to respectively with the valve that awaits measuring realize experimental process on the test device that corresponds, increased the experimental cost of valve on the one hand like this, on the other hand, also increased user's experimental work load.
Disclosure of Invention
The invention aims to provide a valve detection test bed and a valve detection control method, which can perform a pressure test of a valve and a service life test of the valve on the same test bed, reduce equipment required by the detection test of the valve and improve the applicability of the equipment.
The embodiment of the invention is realized by the following steps:
in one aspect of the embodiment of the invention, a valve detection test bed is provided, which comprises a rack, wherein an air source is arranged on the rack, and a first test mechanism and a second test mechanism which are respectively communicated with the air source, the first test mechanism comprises a first air path communicated with the air source, a first air source second connecting piece, a first manual ball valve and a pressure gauge are sequentially arranged on the first air path, and the first air path is also used for connecting a first valve to be detected; the second test mechanism comprises a second air path communicated with the air source, a second air source duplex piece, a second manual ball valve, a five-port two-position electromagnetic valve and a double-acting cylinder are sequentially arranged on the second air path, and the five-port two-position electromagnetic valve is respectively connected with a cylinder barrel and a telescopic rod of the double-acting cylinder and is also used for being connected with a second tested valve.
In the embodiment of the present invention, optionally, the first air passage in the first testing mechanism includes multiple sets, the multiple sets of first air passages are respectively communicated with the air source and are arranged in parallel, and each set of first air passage is used for connecting a first tested valve.
In the embodiment of the present invention, optionally, the second gas circuit in the second testing mechanism includes multiple groups, each group of the second gas circuit corresponds to one five-port two-position solenoid valve, one double-acting cylinder and one second tested valve, and the multiple groups of the second gas circuits are connected in parallel.
In the embodiment of the invention, optionally, a tool for a to-be-tested piece is fixedly arranged on the rack through a quick fastener, the tool for the to-be-tested piece comprises a T-shaped fixing block, and the first to-be-tested valve and the second to-be-tested valve are respectively and fixedly arranged on the rack through the T-shaped fixing block. The tool for the part to be tested further comprises a breather valve tool, the breather valve tool rotates by an angle along the installation position of the breather valve tool on the frame, and the breather valve tool is further provided with rotary scales.
In the embodiment of the present invention, optionally, the valve detection test bed of the embodiment of the present invention further includes a controller, where the controller is respectively connected to the first air source duplex part and the second air source duplex part, and is configured to respectively control on/off of the first air path by the first air source duplex part and on/off of the second air path by the second air source duplex part.
In the embodiment of the present invention, optionally, the valve detection test bed of the embodiment of the present invention further includes a cylinder position sensor, which is used for detecting a telescopic position state of the double acting cylinder.
In the embodiment of the present invention, optionally, the valve detection test bed in the embodiment of the present invention further includes a touch panel electrically connected to the controller and the cylinder position sensor, respectively, where the touch panel is used to display a sensing signal of the cylinder position sensor, and is used to send an operation instruction to the controller through touch control.
In another aspect of the embodiments of the present invention, a valve detection control method is provided, where any one of the above valve detection test beds is adopted, the valve detection test bed includes a controller and a pressure relief valve connected to a pressure gauge, and the controller is in signal connection with the pressure relief valve, and the method includes: controlling the first air circuit to be boosted to a test pressure so as to perform pressure test on the first tested valve; and controlling the pressure relief valve to open to relieve the air pressure in the first air passage.
In this embodiment of the present invention, optionally, the method further includes: circularly executing the operation of controlling the second gas circuit to increase the pressure to the test pressure and release the pressure after keeping the preset time; receiving a counting signal of a counter; and stopping the boosting operation of the second air path when the counting signal reaches a preset counting value.
In the embodiment of the present invention, optionally, the valve detection test bed further includes an emergency stop control switch, and the operation of cyclically executing the operation of controlling the second air path to increase the pressure to the test pressure and release the pressure after keeping the preset duration further includes: receiving a starting signal of an emergency stop control switch; and controlling the pressure relief of the second air path.
The embodiment of the invention has the beneficial effects that:
the valve detection test bed provided by the embodiment of the invention comprises a rack, wherein an air source is arranged on the rack, and a first test mechanism and a second test mechanism which are respectively communicated with the air source, the first test mechanism comprises a first air passage communicated with the air source, a first air source second connecting piece, a first manual ball valve and a pressure gauge are sequentially arranged on the first air passage, the first air passage is also used for connecting a first valve to be detected, and the valve pressure detection test can be carried out on the first valve to be detected by introducing test pressure into the first air passage through the air source. The second test mechanism comprises a second gas path communicated with a gas source, a second gas source duplex piece is sequentially arranged on the second gas path, a second manual ball valve, a five-port two-position electromagnetic valve and a double-acting cylinder, the five-port two-position electromagnetic valve is respectively connected with a cylinder barrel and an expansion link of the double-acting cylinder, the five-port two-position electromagnetic valve is also used for being connected with a second tested valve, test pressure is introduced into the second gas path through the gas source according to preset cycle times, the gas source introduces the test pressure into the second gas path and keeps the pressure relief for one test cycle after preset time, the gas source stops supplying gas after the preset cycle times are reached, and the service life detection test of the second tested valve can be realized. Because the first gas circuit and the second gas circuit are respectively connected with the gas source, two detection tests of the pressure and the service life of the valve to be detected can be completed on the same test bed, so that other test instruments do not need to be purchased, the cost of the valve detection test is reduced, and the workload of an operator is also reduced.
The valve detection control method provided by the embodiment of the invention adopts any one of the valve detection test beds, the valve detection test bed comprises a controller and a pressure release valve connected with a pressure gauge, the controller is in signal connection with the pressure release valve, and the method comprises the following steps: controlling the first air circuit to be boosted to a test pressure so as to perform pressure test on the first tested valve; and controlling the pressure relief valve to open to relieve the air pressure in the first air passage. The pressure detection test process of the first tested valve can be directly controlled through the controller, and the automation capacity and the test precision of the valve detection test bed in the embodiment of the invention are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of a gas path structure of a valve detection test bed provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a valve detection test bed according to an embodiment of the present invention;
FIG. 3 is a front view of a valve testing stand according to an embodiment of the present invention;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is an enlarged view of a portion of area A of FIG. 2;
fig. 6 is a flowchart of a valve detection control method according to an embodiment of the present invention;
fig. 7 is a second flowchart of a valve detection control method according to an embodiment of the present invention;
fig. 8 is a third flowchart of a valve detection control method according to an embodiment of the present invention.
Icon: 10-a frame; 11-a first testing mechanism; 110-a first gas path; 111-first gas supply duplicate; 112-a first manual ball valve; 113-pressure gauge; 114-a pressure relief valve; 12-a second testing mechanism; 120-a second gas path; 121-a second gas source duplicate; 122-a second manual ball valve; 123-five-port two-position electromagnetic valve; 124-double acting cylinder; 20-a gas source; 30-a workpiece to be tested tool; 60-a touch panel; 70-placing a cabinet; 90-emergency stop control switch.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In one aspect of the embodiment of the present invention, a valve detection test bed is provided, as shown in fig. 1 and fig. 2, including a rack 10, where the rack 10 is provided with an air source 20, and a first test mechanism 11 and a second test mechanism 12 respectively communicated with the air source 20, the first test mechanism 11 includes a first air path 110 communicated with the air source 20, the first air path 110 is sequentially provided with a first air source two-link 111, a first manual ball valve 112 and a pressure gauge 113, and the first air path 110 is further used for connecting a first valve to be tested; the second testing mechanism 12 comprises a second gas path 120 communicated with the gas source 20, a second gas source duplex piece 121, a second manual ball valve 122, a five-port two-position electromagnetic valve 123 and a double-acting cylinder 124 are sequentially arranged on the second gas path 120, and the five-port two-position electromagnetic valve 123 is respectively connected with a cylinder barrel and an expansion link of the double-acting cylinder 124 and is also used for being connected with a second tested valve.
It should be noted that, the test of the valve usually includes at least two types, namely, a pressure test and a life test, the pressure test refers to releasing pressure after the gas supply of the valve gas circuit reaches the test pressure, and testing the pressure bearing capacity of the valve, the life test refers to releasing pressure after the preset test pressure state of the valve is maintained for a preset time, as a test cycle, the cycle number is preset according to the test requirement to perform repeated cycles, and after the test, the reliability of the valve is evaluated. The valve detection test bed comprises a first test mechanism 11 and a second test mechanism 12 which are respectively connected with an air source 20 on a frame 10, wherein the first test mechanism 11 is used for carrying out pressure test on a valve. In general, the pressure test of the first test unit 11 and the life test of the second test unit 12 are performed on the same test stand and not simultaneously in the valve detection test stand according to the embodiment of the present invention.
As shown in fig. 1 and with reference to fig. 2, a first valve to be tested to be pressure tested is fixed on the rack 10 and is communicated with a first gas path 110 in the first testing mechanism 11, a first gas source two-way connector 111, a first manual ball valve 112 and a pressure gauge 113 are sequentially arranged on the first gas path 110, after the first manual ball valve 112 is manually operated to be in an open state, the first gas source two-way connector 111 is controlled to enable the gas source 20 to boost the pressure in the first gas path 110 to a testing pressure, so that the pressure test can be performed on the first valve to be tested, wherein the pressure gauge 113 can be used for observing the gas pressure value in the first gas path 110 to obtain an accurate pressure value. After the pressure test is completed, the pressure in the first air passage 110 is vented. When the test is no longer performed in the first testing mechanism 11, the first manual ball valve 112 needs to be manually closed in time to avoid the adverse effect of the ventilation of the first air passage 110 in the first testing mechanism 11 on the test of the second testing mechanism 12.
The second tested valve needing life test is fixed on the frame 10 and communicated with the second gas path 120 in the second testing mechanism 12, a second gas source second connector 121, a second manual ball valve 122, a five-port two-position electromagnetic valve 123 and a double-acting cylinder 124 are sequentially arranged on the second gas path 120, the five-port two-position electromagnetic valve 123 is respectively connected with a cylinder barrel and an expansion rod of the double-acting cylinder 124, the second manual ball valve 122 is manually operated to be in an opening state, the second gas source second connector 121 is controlled to enable the gas source 20 to boost the pressure in the second gas path 120, the five-port two-position electromagnetic valve 123 is used for controlling the reciprocating motion of the double-acting cylinder 124, the second tested valve is subjected to the life test of reciprocating gas supply for multiple times according to the preset times, after the preset times of the life test are reached, the gas supply is stopped, and the second manual ball valve 122 is manually closed.
Therefore, the valve detection test bed provided by the embodiment of the invention can be used for respectively carrying out pressure test and service life test on the valve, a plurality of single test beds are not required to be arranged, and the test workload of an operator is reduced to a certain extent.
The valve detection test bed provided by the embodiment of the invention comprises a rack 10, wherein an air source 20, a first test mechanism 11 and a second test mechanism 12 which are respectively communicated with the air source 20 are arranged on the rack 10, the first test mechanism 11 comprises a first air path 110 communicated with the air source 20, a first air source second connecting piece 111, a first manual ball valve 112 and a pressure gauge 113 are sequentially arranged on the first air path 110, the first air path 110 is also used for connecting a first valve to be detected, and the valve pressure detection test can be carried out on the first valve to be detected by introducing test pressure to the first air path 110 through the air source 20. The second testing mechanism 12 comprises a second gas path 120 communicated with the gas source 20, a second gas source duplex piece 121, a second manual ball valve 122, a five-port two-position electromagnetic valve 123 and a double-acting cylinder 124 are sequentially arranged on the second gas path 120, the five-port two-position electromagnetic valve 123 is respectively connected with a cylinder barrel and an expansion rod of the double-acting cylinder 124 and is also used for being connected with a second tested valve, testing pressure is introduced into the second gas path 120 through the gas source 20 according to preset cycle times, the testing pressure is introduced into the second gas path 120 through the gas source 20 and is released to be a testing cycle after a preset time is kept, the gas source 20 stops supplying gas after the preset cycle times are reached, and a service life detection test of the second tested valve can be realized. Because the first gas circuit 110 and the second gas circuit 120 are respectively connected with the gas source 20, two detection tests of the pressure and the service life of the valve to be detected can be completed on the same test bed, so that other test instruments do not need to be purchased, the cost of the valve detection test is reduced, and the workload of an operator is also reduced.
In an embodiment of the present invention, optionally, as shown in fig. 1 and fig. 2, the first air path 110 in the first testing mechanism 11 includes multiple sets, the multiple sets of first air paths 110 are respectively communicated with the air source 20 and are arranged in parallel, and each set of first air path 110 is used for connecting to a first valve to be tested.
Thus, as shown in fig. 1 and fig. 2, a plurality of groups of first air paths 110 connected in parallel in the first testing mechanism 11 can simultaneously test a plurality of first valves to be tested, which need to be subjected to pressure tests, and can effectively improve the testing efficiency of the valve detection test bed according to the embodiment of the present invention for performing pressure tests.
Since the plurality of sets of first air paths 110 are connected in parallel and are all communicated with the air source 20, the testing processes between the plurality of sets of first air paths 110 will not affect each other.
In an embodiment of the present invention, optionally, as shown in fig. 1 and fig. 2, the second gas circuit 120 in the second testing mechanism 12 includes multiple sets, each set of the second gas circuit 120 corresponds to one five-port two-position solenoid valve 123, one double-acting cylinder 124, and one second tested valve, and the multiple sets of the second gas circuits 120 are connected in parallel.
As shown in fig. 1 and 2, since there are many kinds of valves that need to be tested by the valve test stand according to the embodiment of the present invention, for example, the emergency cut-off valve, the oil gas recovery valve, the sideboard ventilating valve, the oil gas recovery coupling valve, the oil drain valve, etc. have different structures and different testing manners, and each group of the second gas path 120 corresponds to one five-port two-position solenoid valve 123 and one double-acting cylinder 124, so that, for each group of the second air circuits 120, a valve life test can be performed on the second valve under test connected thereto, and when the second valve under test is a valve with different strokes, the stroke of movement of double acting cylinder 124 may be controlled by a five port, two position solenoid valve 123 to reflect the stroke of the valve, which may be, for example, the motion stroke state of double acting cylinder 124 may be obtained by providing a cylinder position sensor.
Of course, when the second measured valve is a valve without different strokes, the double acting cylinder 124 may not be provided on the second air path 120, and only the five-port two-position solenoid valve 123 is connected to the valve. The skilled person can choose the arrangement according to the specific structure of the actual valve to be tested.
In the embodiment of the present invention, optionally, as shown in fig. 1 and fig. 2, the valve detection test bed of the embodiment of the present invention further includes a pressure relief valve 114 connected to the pressure gauge 113.
As shown in fig. 1, pressure release valve 114 is connected with pressure gauge 113, and after pressure test was accomplished, can directly carry out the pressure release to first gas circuit 110 through pressure release valve 114, and the process of pressure release also can obtain the real-time pressure value of first gas circuit 110 through pressure gauge 113 in addition, and the operator of being convenient for carries out accurate pressure release operation.
In an embodiment of the present invention, optionally, as shown in fig. 2, a to-be-tested tooling 30 is fixedly disposed on the rack 10 through a fast fastener, the to-be-tested tooling 30 includes a T-shaped fixing block, and the first to-be-tested valve and the second to-be-tested valve are respectively fixedly disposed on the rack 10 through the T-shaped fixing block.
The valves that need to be tested are large in size, dead weight is large, if the valves are not fixed stably, accuracy of a test can be affected on the one hand, the valves drop due to unstable fixation or air circuit disconnection occurs in a test process due to sudden air, and certain dangerousness can be caused, so that as shown in fig. 3 and 4, a tool 30 to be tested is fixedly arranged on a rack 10 through a quick fastening piece, for example, when the to-be-tested piece is a breather valve, the tool 30 to be tested can be a hollow cylinder as shown in fig. 3, the breather valve to be tested can be installed in a cavity of the cylinder tool in a threaded fastening connection mode, and in order to ensure the fixing stability of the tool 30 to be tested on the first tested valve and the second tested valve, the tool 30 to be tested can be made of firmer metal materials.
In the embodiment of the present invention, optionally, as shown in fig. 5, when the workpiece to be measured is a breather valve, the workpiece to be measured tool 30 may further be configured to be rotatable by an angle along the installation position of the workpiece to be measured on the rack 10, and a rotation scale is further disposed on the workpiece to be measured tool 30.
For example, when the breath valve needs to be detected, due to the special structure of the breath valve, the rotation angle of the breath valve needs to be measured during the test, but also the angle of rotation of the breathing valve, needs to be recorded as test data, so that, for example, the tool 30 for the workpiece to be tested can be set as a breather valve tool, the breather valve tool can rotate by a self angle along the installation position of the breather valve tool on the frame 10, thereby driving the rotation angle of the breather valve fixedly arranged on the breather valve tool to meet the requirement of a test, the breather valve tool is further provided with a rotary scale, for example, the rotary scale adopts a structure of a circular scale and an annular scale indicating window which are concentrically overlapped, the annular scale is fixedly arranged on the breather valve tool, the annular scale indicating window is fixed with the frame 10, and thus, after the breather valve and the breather valve tool rotate, an operator can directly read and record the rotating angle of the breather valve through the rotating scales.
Of course, the structure of the rotary scale is only described by way of example, and the rotary scale is not particularly limited in the embodiment of the present invention, as long as the rotary angles of the breather valve fixture and the breather valve mounted on the breather valve fixture can be recorded and read.
In an embodiment of the present invention, optionally, as shown in fig. 3, the valve detection test bed according to the embodiment of the present invention further includes a controller (components such as a controller and an air source duplicate are generally disposed inside the lower cabinet body shown in fig. 3, and therefore are not shown in fig. 3), the controller controls on/off of the five-port two-position electromagnetic valve 123 so as to control on/off of the second air path 120, and the switching between the first air path 110 and the second air path 120 is adjustably controlled by manually controlling a two-position three-way valve disposed between the first air path 110 and the second air path 120.
In the embodiment of the present invention, optionally, as shown in fig. 4, the valve detection test bed of the embodiment of the present invention further includes a cylinder position sensor (not shown in fig. 4) for detecting the telescopic position state of the double acting cylinder 124.
As can be seen from the above description, when the second valve to be tested, which needs to be subjected to the life test, is a valve with a different stroke, the cylinder position sensor is disposed on the corresponding second gas path 120, and the telescopic position state of the dual-acting cylinder 124 on the second gas path 120 is detected.
The specific detection method of the cylinder position sensor in the embodiment of the present invention is not limited in particular, and for example, the cylinder position sensor may be an optoelectronic switch, and perform detection by sending and receiving a light signal fed back, or may be another detection method. In order to avoid influence or interference on the second valve to be tested and the testing process of the second gas circuit 120, the cylinder position sensor is usually detected in a non-contact manner.
It should be noted that, because the life detection test of the second tested valve requires to cycle for multiple times of pressure increase and pressure release, and in a single pressure increase process, when the pressure is increased to the test pressure, a preset time period is required to be maintained, for example, the test pressure is maintained for 3 seconds and then the pressure release is performed as a cycle, a timer may be further disposed on the valve detection test bed according to the embodiment of the present invention, the timer is electrically connected to the controller, and the time period of pressure increase in each cycle of the life detection test is controlled and recorded by the timer.
In the embodiment of the present invention, optionally, as shown in fig. 4, the valve detection test bench of the embodiment of the present invention further includes a touch panel 60 electrically connected to the controller and the cylinder position sensor, respectively, where the touch panel 60 is used for displaying the sensing signal of the cylinder position sensor and for touch control to send an operation instruction to the controller.
As shown in fig. 4, a touch panel 60 is further disposed on the frame 10, the touch panel 60 is electrically connected to the controller and the cylinder position sensor, respectively, an operator can perform touch operation on the touch panel 60, and a sensing signal detected by the cylinder position sensor can also be displayed on the touch panel 60 in real time, so that the operator can observe and record conveniently. The operator sends a corresponding operation instruction to the controller through touch control on the touch panel 60. For example, as shown in fig. 4, the valve detection test bed according to the embodiment of the present invention may be divided into two areas, namely a test area and an operation area, the air source 20 is disposed at the lower portion of the valve detection test bed and is respectively communicated with the first air path 110 in the first test mechanism 11 located in the test area and the second air path 120 in the second test mechanism 12 located in the test area, the controller and the touch panel 60 are disposed in the operation area, and an operator may perform touch operation and observation recording in the operation area.
In the embodiment of the present invention, optionally, as shown in fig. 2 and fig. 3, a placing cabinet 70 is further disposed on the rack 10, and the placing cabinet 70 is used for storing the first tested valve and the second tested valve to be tested.
As shown in fig. 2 and 3, the rack 10 located below the touch panel 60 is provided with a placement cabinet 70, and the first tested valve and the second tested valve to be tested can be placed by using the spatial structure of the test bed located below the touch panel 60, so that the first tested valve and the second tested valve can be conveniently taken and stored during testing, and meanwhile, the space of the valve detection test bed according to the embodiment of the invention is fully utilized, so that the space is compact and the utilization rate is high.
The space of the frame 10 of the valve detection test bed of the embodiment of the invention, which is positioned below the first test mechanism 11 and the second test mechanism 12, can also be used for arranging a plurality of layers of the first test mechanism 11 and the second test mechanism 12 in a stacking manner, so that the number of pieces to be tested in the same batch of tests is increased, and the test efficiency is improved.
In another aspect of the embodiments of the present invention, a valve detection control method is provided, where any one of the above valve detection test beds is adopted, as shown in fig. 1 and fig. 2, the valve detection test bed includes a controller and a pressure relief valve 114 connected to a pressure gauge 113, and the controller is in signal connection with the pressure relief valve 114, as shown in fig. 6, the method includes:
s101, controlling the first air path 110 to be boosted to a test pressure so as to perform pressure test on the first valve to be tested;
s102, the pressure relief valve 114 is controlled to be opened, and the air pressure in the first air passage 110 is relieved.
As shown in fig. 6, when a pressure test is required to be performed on the first valve to be tested, the first valve to be tested is first fixed on the frame 10 and is communicated with the first air passage 110 in the first testing mechanism 11, the first air source coupler 111, the first manual ball valve 112 and the pressure gauge 113 are sequentially arranged on the first air passage 110, and the first manual ball valve 112 is manually operated to be in an open state.
S101, controlling the first air path 110 to be boosted to a test pressure so as to perform a pressure test on the first valve to be tested. During the test, the operator can open the air source through the regulating valve on the first air source duplex piece 111 to boost the pressure of the first air path 110, observe the pressure gauge 113 to observe the rise of the air pressure value in the first air path 110, when the air pressure value displayed by the pressure gauge 113 rises to the preset test pressure (for example, more than 37 kpa), the operator needs to further observe the condition that the air pressure pipe connected into the water tank generates bubbles, verify the pressure condition in the first air path 110, so as to confirm whether the pressure value required by the test is reached in the first air path 110, and after the first air path 110 reaches the required test pressure, the pressure in the first air path 110 is controlled to stop boosting.
After the pressure test is finished, S102, controlling the pressure relief valve 114 to open, relieving the air pressure in the first air passage 110, and completing the pressure test, that is, the first valve to be tested can be detached, or other first valves to be tested can be reinstalled to continue the test. When the test is no longer performed in the first test mechanism 11, the first manual ball valve 112 needs to be manually closed in time to avoid adverse effects of the ventilation of the first air passage 110 in the first test mechanism 11 on the test of the second test mechanism 12.
The valve detection control method provided by the embodiment of the invention adopts any one of the above valve detection test beds, the valve detection test bed comprises a controller and a pressure relief valve 114 connected with a pressure gauge 113, the controller is in signal connection with the pressure relief valve 114, and the method comprises the following steps: controlling the first air circuit 110 to be boosted to a test pressure so as to perform pressure test on the first tested valve; the pressure relief valve 114 is controlled to open, relieving the air pressure in the first air passage 110. The pressure detection test process of the first tested valve can be directly controlled through the controller, and the automation capacity and the test precision of the valve detection test bed in the embodiment of the invention are improved.
In the embodiment of the present invention, optionally, the valve detection test bed further includes a counter in signal connection with the controller, and is configured to record the number of the pressure boosting and relieving cycles of the second gas circuit 120; as shown in fig. 7, the method further comprises:
s201, circularly executing the operation of controlling the second gas circuit 120 to increase the pressure to the test pressure and release the pressure after keeping the preset time;
s202, receiving a counting signal of a counter;
and S203, stopping the boosting operation of the second air path 120 when the counting signal reaches a preset counting value.
The valve detection test bed of the embodiment of the invention further comprises a counter in signal connection with the controller, and is used for recording the number of times of the pressure boosting and pressure releasing period of the second gas path 120, fixing a second valve to be tested, which needs to be subjected to a life test, on the rack 10 and communicating with the second gas path 120 in the second test mechanism 12, wherein the second gas path 120 is sequentially provided with a second gas source second connecting piece 121, a second manual ball valve 122, a five-port two-position electromagnetic valve 123 and a double-acting cylinder 124, the five-port two-position electromagnetic valve 123 is respectively connected with a cylinder barrel and an expansion link of the double-acting cylinder 124, and the second manual ball valve 122 is manually operated to be in an open state, so that the second gas path 120 can supply gas.
And then, S201, circularly executing the operation of controlling the second air path 120 to increase the pressure to the test pressure and release the pressure after keeping the preset time. Because the life detection test of the second tested valve needs to circularly boost and release pressure for multiple times, and in a single boosting process, when the pressure is boosted to the test pressure, a preset time length needs to be kept, for example, the test pressure is kept for 3 seconds and then the pressure is released to be used as a cycle, a timer can be further arranged on the valve detection test bed of the embodiment of the invention, the timer is electrically connected with the controller, and the time length of boosting in each circulation in the life detection test is controlled and recorded through the timer.
S202, receiving a counting signal of the counter, counting and adding one after the counter completes each cycle of pressure boosting and pressure releasing, presetting a cycle number value required by a life test in the controller, or writing the cycle number value required by the life test into the controller through the touch panel 60 before the test starts, and receiving the counting signal of the counter by the controller and comparing the counting signal with the cycle number value for comparison.
S203, when the count signal of the counter reaches the cycle number, the controller stops the boosting operation of the second gas path 120. I.e. the life test is completed.
In an embodiment of the present invention, optionally, as shown in fig. 4 and 8, the valve detection test bed further includes an emergency stop control switch 90, and as shown in fig. 7, the operation of cyclically executing S201, controlling the second gas circuit 120 to boost to the test pressure and to release the pressure after keeping the test pressure for a preset time period further includes:
s301, receiving a starting signal of the emergency stop control switch 90;
and S302, releasing pressure of the second air path 120.
As shown in fig. 4, the valve detection test bed according to the embodiment of the present invention further includes an emergency stop control switch 90, and the emergency stop control switch 90 is electrically connected to the controller, for example, the emergency stop control switch 90 may be a key switch disposed in the operation area, or may be a touch switch integrated on the touch panel 60. In the process of using the valve detection test bed of the embodiment of the invention to carry out the life test on the second tested valve, if a certain abnormal condition occurs in the cycle test, for the sake of safety, the valve detection test bed needs to be stopped quickly for inspection, so that the danger can be eliminated. At this time, the operator issues an activation signal by operating the emergency stop control switch 90. S301, after the controller receives the starting signal of the emergency stop control switch 90, S302 can be immediately executed to release the pressure of the second air path 120. When the second testing mechanism 12 of the valve detection testing stand of the embodiment of the present invention includes a plurality of sets of second air paths 120, the control range of the emergency stop control switch 90 may be set to be one set of the second air paths 120, or the plurality of sets of the second air paths 120 may receive a control signal to release pressure.
In addition, in order to avoid the influence of the misoperation of the operator on the test, when the operator sends a start signal by operating the emergency stop control switch 90, after receiving the start signal, the controller firstly sends a confirmation message to the touch panel 60, and after the operator touches the control to confirm the message, the controller executes the pressure relief instruction to the second air path 120.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A valve detection test bed is characterized by comprising a rack, wherein an air source, a first test mechanism and a second test mechanism are arranged on the rack and are respectively communicated with the air source, the first test mechanism comprises a first air path communicated with the air source, a first air source second connecting piece, a first manual ball valve and a pressure gauge are sequentially arranged on the first air path, and the first air path is also used for connecting a first valve to be tested; the second testing mechanism comprises a second air path communicated with the air source, a second air source duplex piece, a second manual ball valve, a five-port two-position electromagnetic valve and a double-acting cylinder are sequentially arranged on the second air path, and the five-port two-position electromagnetic valve is respectively connected with a cylinder barrel and a telescopic rod of the double-acting cylinder and is also used for being connected with a second tested valve.
2. The valve detection test bed according to claim 1, wherein the first air passage in the first test mechanism includes a plurality of sets, the plurality of sets of first air passages are respectively communicated with the air source and are arranged in parallel, and each set of first air passage is used for connecting one first valve to be tested.
3. The valve detection test bed according to claim 2, wherein the second gas paths in the second test mechanism include a plurality of groups, each group of second gas paths corresponds to one of the five-port two-position solenoid valves, one of the double-acting cylinders and one of the second valves to be tested, and the plurality of groups of second gas paths are connected in parallel.
4. The valve detection test bed according to claim 1, wherein a tool to be tested is fixedly arranged on the frame through a quick fastener, the tool to be tested comprises a T-shaped fixed block, and the first valve to be tested and the second valve to be tested are respectively and fixedly arranged on the frame through the T-shaped fixed block; the tool for the part to be tested further comprises a breather valve tool, the breather valve tool is arranged at a mounting position rotating angle on the rack along the breather valve tool, and rotating scales are further arranged on the breather valve tool.
5. The valve detection test bed according to claim 1, further comprising a controller, wherein the controller is connected to the first air source duplex piece and the second air source duplex piece respectively, and is configured to control on/off of the first air path by the first air source duplex piece and on/off of the second air path by the second air source duplex piece respectively.
6. The valve test rig of claim 5, further comprising a cylinder position sensor for sensing a telescopic position status of the dual acting cylinder.
7. The valve detection test bed according to claim 6, further comprising a touch panel electrically connected to the controller and the cylinder position sensor, respectively, wherein the touch panel is configured to display a sensing signal of the cylinder position sensor and to send an operation instruction to the controller by touch control.
8. A valve detection control method, which adopts the valve detection test bed according to any one of claims 1 to 7, wherein the valve detection test bed comprises a controller and a pressure relief valve connected with a pressure gauge, the controller is in signal connection with the pressure relief valve, and the method comprises the following steps:
controlling the first air circuit to be boosted to a test pressure so as to perform pressure test on the first tested valve;
and controlling the opening of the pressure relief valve to relieve the air pressure in the first air passage.
9. The valve detection control method according to claim 8, wherein the valve detection test bed further comprises a counter in signal connection with the controller, and the counter is used for recording the number of times of the pressure boosting and relieving period of the second gas circuit; characterized in that the method further comprises:
circularly executing the operation of controlling the second gas circuit to increase the pressure to the test pressure and release the pressure after keeping the preset time;
receiving a counting signal of the counter;
and stopping the boosting operation of the second gas circuit when the counting signal reaches a preset counting value.
10. The valve detection control method according to claim 9, wherein the valve detection test bed further comprises an emergency stop control switch, and the operation of cyclically executing control to boost the pressure of the second gas path to the test pressure and to release the pressure after keeping the pressure for a preset time further comprises:
receiving a starting signal of the emergency stop control switch;
and controlling the second air path to release pressure.
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| CN201911169453.6A CN110967180A (en) | 2019-11-22 | 2019-11-22 | Valve detection test bed and valve detection control method |
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| CN201911169453.6A CN110967180A (en) | 2019-11-22 | 2019-11-22 | Valve detection test bed and valve detection control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027832A (en) * | 2021-03-05 | 2021-06-25 | 浙江省泵阀产品质量检验中心（永嘉县质量技术监督检测研究院） | Steel bottom valve thrust deformation rupture testing arrangement for tank car |
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2019
- 2019-11-22 CN CN201911169453.6A patent/CN110967180A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027832A (en) * | 2021-03-05 | 2021-06-25 | 浙江省泵阀产品质量检验中心（永嘉县质量技术监督检测研究院） | Steel bottom valve thrust deformation rupture testing arrangement for tank car |
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