CN210802883U - Valve detection test bed - Google Patents

Abstract

The utility model discloses a valve test bench relates to valve detection technical field, can carry out the pressure test of valve and the life-span test of valve on same test bench, reduces and carries out the required equipment of test, improve equipment's suitability to the valve. 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

Valve detection test bed

Technical Field

The utility model relates to a valve detects technical field, particularly, relates to a valve test bench.

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.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a valve test bench, it can carry out the pressure test of valve and the life-span test of valve on same test bench, reduces and carries out the required equipment of test, improve equipment's suitability to the valve.

The embodiment of the utility model is realized like this:

the embodiment of the utility model provides a valve detection test bed, including the frame, be provided with the air supply in the frame to and respectively with the first test mechanism and the second test mechanism of air supply intercommunication, first test mechanism includes the first gas circuit of air supply intercommunication, has set gradually first air supply two-way spare, first manual ball valve and manometer on first gas circuit, still be used for connecting the first valve under test on the first gas circuit; 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.

The embodiment of the utility model provides an in, optional, first air passage in the first test mechanism is including the multiunit, and the first air passage of multiunit communicates and the mutual parallelly connected setting with the air supply respectively, and every first air passage of a set of is used for connecting a first measured valve.

The embodiment of the utility model provides an in, optional, the second gas circuit in the second test mechanism is including the multiunit, and every group second gas circuit corresponds a five mouthful of two-position solenoid valves, a two effect cylinders and a second measured valve respectively, and multiunit second gas circuit is parallelly connected each other.

The embodiment of the utility model provides an in, it is optional, the utility model discloses valve test bench still includes the relief valve of being connected the setting with the manometer.

The embodiment of the utility model provides an in, it is optional, through the fixed frock that awaits measuring that is provided with of quick fastening spare in the frame, the frock that awaits measuring includes T type fixed block, and first measured valve and second are measured the valve and are set up in the frame through T type fixed block is fixed respectively.

The embodiment of the utility model provides an in, it is optional, the piece frock of awaiting measuring still includes the breather valve frock, and the breather valve frock still is provided with rotatory scale along its mounted position rotation angle in the frame on the breather valve frock.

The embodiment of the utility model provides an in, it is optional, the utility model discloses valve test bench still includes the controller, and first air supply allies oneself with piece and second air supply allies oneself with piece are connected respectively to the controller for control respectively first air supply allies oneself with the break-make of piece to first gas circuit and the break-make of second air supply allies oneself with the piece to the second gas circuit.

The embodiment of the utility model provides an in, it is optional, the utility model discloses the valve test bench of detection still includes cylinder position sensor for detect the flexible position state of two effect cylinders.

In the embodiment of the utility model provides an in, it is optional, the utility model discloses the valve test bench of still includes the touch panel who is connected with controller and cylinder position sensor electricity respectively, and touch panel is used for showing cylinder position sensor's sensing signal to and be used for touch control to send operating command to the controller.

The embodiment of the utility model provides an in, it is optional, still be provided with in the frame and place the cabinet, place the cabinet and be used for depositing the first measured valve and the second measured valve that await measuring.

The utility model discloses beneficial effect includes:

the embodiment of the utility model provides a pair of valve detection test bench, which comprises a frame, be provided with the air supply in the frame to and respectively with first test mechanism and the second test mechanism of air supply intercommunication, first test mechanism includes the first gas circuit with the air supply intercommunication, has set gradually first air supply two on first gas circuit and has linked up piece, first manual ball valve and manometer, still is used for connecting first measured valve on the first gas circuit, and it can carry out valve pressure detection test to first measured valve to go into test pressure through the air supply to first gas circuit. 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.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required 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 circuit 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 detection test bed 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 embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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, as 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 accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to 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 directions or positional relationships indicated by the terms "inside" and "outside" are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to be referred must have a specific direction, be constructed and operated in a specific direction, and therefore, 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, there is provided a valve detection test bed, as shown in fig. 1 and fig. 2, including a frame 10, an air source 20 is provided on the frame 10, and a first testing mechanism 11 and a second testing mechanism 12 respectively communicated with the air source 20, the first testing mechanism 11 includes a first air path 110 communicated with the air source 20, a first air source two-link 111, a first manual ball valve 112 and a pressure gauge 113 are sequentially provided on the first air path 110, and the first air path 110 is further used for connecting a first measured valve; 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 utility model discloses valve test bench includes first test mechanism 11 and second test mechanism 12 that are connected with air supply 20 respectively in frame 10, and wherein, first test mechanism 11 is used for carrying out pressure test to the valve. Under normal conditions, the pressure test of first test mechanism 11 and the life test of second test mechanism 12 are in the utility model discloses the valve test bench of embodiment is with the platform and not detect simultaneously.

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, can the utility model discloses valve test bench carries out pressure test and life-span test to the valve respectively, and need not to set up multiple single test bench again, has also alleviateed operator's test work load to a certain extent.

The embodiment of the utility model provides a pair of valve detection test bench, which comprises a frame 10, be provided with air supply 20 in frame 10, and respectively with first test mechanism 11 and the second test mechanism 12 of air supply 20 intercommunication, first test mechanism 11 includes the first gas circuit 110 with air supply 20 intercommunication, first gas circuit 110 is last to have set gradually first gas supply two allies oneself with piece 111, first manual ball valve 112 and manometer 113, still be used for connecting first quilt survey valve on the first gas circuit 110, let in test pressure to first gas circuit 110 through air supply 20 and can carry out valve pressure detection test to first quilt survey valve. 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 the embodiment of the present invention, optionally, as shown in fig. 1 and fig. 2, the first gas circuit 110 in the first testing mechanism 11 includes a plurality of groups, the plurality of groups of first gas circuits 110 are respectively communicated with the gas source 20 and are arranged in parallel, and each group of first gas circuits 110 is used for connecting a first tested valve.

Thus, as shown in fig. 1 and fig. 2, the first gas circuit 110 connected in parallel to each other of the multiple groups in the first testing mechanism 11 can test a plurality of first valves to be tested that need to be subjected to pressure test, and can effectively improve the efficiency of the valve testing table for testing pressure test.

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 the 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 a plurality of groups, each group of second gas circuit 120 corresponds to a five-port two-position solenoid valve 123, a double-acting cylinder 124 and a second tested valve, and the plurality of groups of 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 testing 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, it is optional, as shown in fig. 1 and fig. 2, the valve testing stand 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.

The embodiment of the present invention is that, optionally, as shown in fig. 2, a tool 30 to be tested is fixedly disposed on the frame 10 through a quick fastening element, the tool 30 to be tested includes a T-shaped fixing block, and the first valve to be tested and the second valve to be tested are respectively fixedly disposed on the frame 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 piece to be measured is a breather valve, the piece to be measured tool 30 may further be set to be rotatable along its installation position on the frame 10, and a rotation scale is further provided on the piece 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 above structure to the rotary scale is only illustrated by way of example, and the embodiment of the present invention does not specifically limit this, as long as the rotation angle of the breather valve tool and the breather valve installed on the breather valve tool can be recorded and read.

In the embodiment of the utility model, optionally, as shown in fig. 3, the utility model discloses valve test bench still includes the controller (parts such as controller and air supply duplicate set up in the internal portion of lower part cabinet as shown in fig. 3 usually, therefore not shown in fig. 3), thereby the switching of second gas circuit 120 is controlled in the break-make of five mouthful of two-position solenoid valves 123 of controller control, sets up the switching of the two-position three-way valve adjustable control first gas circuit 110 of between first gas circuit 110 and second gas circuit 120 through manual control with second gas circuit 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.

According to the above description, when the second tested valve that needs to carry out life test is the valve that has different strokes, set up cylinder position sensor on this corresponding second gas circuit 120, detect the flexible position state of double acting cylinder 124 on this second gas circuit 120, the embodiment of the utility model provides an it does not do the restriction to the concrete position that sets up of cylinder position sensor in second gas circuit 120, as long as can make cylinder position sensor can record the flexible position state of double acting cylinder 124.

The embodiment of the utility model provides an in also do not specifically limit to cylinder position sensor's concrete detection mode, the example, cylinder position sensor can be photoelectric switch, detects through the mode of sending and receiving the light signal that feeds back, perhaps, still can be other detection methods. 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 further explained that, because the life-span testing to the second valve under test need circulate and boost the pressure release many times, moreover in the single in-process that steps up, need keep predetermineeing when stepping up to test pressure long, for example keep test pressure 3 seconds to release pressure again and just can regard as a circulation, can also be in the utility model discloses a valve test bench sets up the time-recorder, and the time-recorder is connected with the controller electricity, through the time-recorder control with record life-span testing in the time length of stepping up in the circulation of each time.

In the embodiment of the present invention, it is optional, 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, and the touch panel 60 is used for displaying the sensing signal of the cylinder position sensor and for controlling the touch to send the operation command 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. Exemplarily, as shown in fig. 4, the utility model discloses valve test bench can be divided into two regions of test area and operation area, and air supply 20 sets up in the lower part of valve test bench to with be arranged in the first gas circuit 110 of the first test mechanism 11 in the test area, and be arranged in the second gas circuit 120 of the second test mechanism 12 in the test area and communicate respectively, controller and touch panel 60 set up in the operation area, the operator carry out touch-control operation and observe the record in the operation area can.

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 frame 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 fig. 3, the placing cabinet 70 is disposed on the rack 10 under the touch panel 60, and the space structure of the testing stand under the touch panel 60 is utilized to place the first tested valve and the second tested valve to be tested, so as to facilitate the taking and storing of the plurality of first tested valves and the second tested valves during the test, and simultaneously, the space of the valve testing stand provided by the embodiment of the present invention is fully utilized, so that the space is compact and the utilization rate is high.

The utility model discloses valve test bench is located 10 spaces in the frame under first test mechanism 11 and the second test mechanism 12 and can also be used for range upon range of the first test mechanism 11 of multilayer and the second test mechanism 12 of setting to improve with the piece quantity that awaits measuring of criticizing the test, improve efficiency of software testing.

The embodiment of the utility model provides a further aspect provides a valve detection control method, adopts the valve test bench of any one of above-mentioned, as shown in fig. 1 and fig. 2, valve test bench includes the controller and is connected the relief valve 114 that sets up with manometer 113, controller and relief valve 114 signal connection, 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 embodiment of the utility model provides a valve detection control method adopts the valve test bench of above-mentioned arbitrary, and valve test bench includes the controller and is connected the relief valve 114 that sets up with manometer 113, controller and relief valve 114 signal connection, and the method includes: 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. Can improve to the pressure detection test process of first measured valve through controller direct control the utility model discloses valve test bench's automatic ability and experimental precision.

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 boosting and pressure releasing 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 utility model discloses valve test bench still includes the counter with controller signal connection for record second gas circuit 120 the pressure release cycle number of times that steps up, the second that will carry out the life test is fixed on frame 10 by the valve and is linked together with second gas circuit 120 in second test mechanism 12, second gas source two allies oneself with piece 121 has set gradually on second gas circuit 120, the manual ball valve 122 of second, five mouthful of two-position solenoid valve 123 and two effect jar 124, five mouthful of two-position solenoid valve 123 are connected with the cylinder and the telescopic link of two effect jar 124 respectively, the manual ball valve 122 of manual operation second is for opening the state, but make second gas circuit 120 be the air feed state.

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 life-span testing to the second valve under test need circulate many times and step up the pressure release, in the single in-process that steps up moreover, need keep predetermineeing when stepping up to test pressure long, for example keep test pressure 3 seconds to release pressure again and just can regard as a circulation, consequently, can also be in the utility model discloses set up the timer on the valve test bench, the timer is connected with the controller electricity, through the time length that steps up in the circulation of each time in the timer control and the record life-span testing.

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 the embodiment of the present invention, optionally, as shown in fig. 4 and fig. 8, the valve detection test stand further includes an emergency stop control switch 90, as shown in fig. 7, the operation of performing S201 cyclically, controlling the second gas circuit 120 to boost to the test pressure and keeping the preset pressure relief after the 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 of the embodiment of the present invention further includes an emergency stop control switch 90, the emergency stop control switch 90 is electrically connected to the controller, and for example, the emergency stop control switch 90 may be a key switch disposed in the operation area, and may also be a touch switch integrated on the touch panel 60. Use the utility model discloses valve test bench is to the second by the in-process that the valve carries out life test, if certain abnormal conditions appear in the cycle test, for the safety, need shut down fast and inspect and can get rid of danger. 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 utility model discloses valve test bench's second test mechanism 12 includes multiunit second gas circuit 120, can set up emergency stop control switch 90's control range for wherein certain a set of second gas circuit 120, also can accept the control signal pressure release for multiunit second gas circuit 120 simultaneously.

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 testing stand of claim 1, further comprising a pressure relief valve connected to the pressure gauge.

5. The valve detection test bed according to claim 1, wherein a tool to be tested is fixedly arranged on the frame through a quick fastening piece, the tool to be tested comprises a T-shaped fixing 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 fixing block.

6. The valve detection test bed according to claim 5, wherein the tool 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 rack, and the breather valve tool is further provided with a rotation scale.

7. 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.

8. The valve test rig of claim 7, further comprising a cylinder position sensor for sensing a telescopic position status of the dual acting cylinder.

9. The valve detection test bed according to claim 8, 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.

10. The valve detection test bed according to claim 1, wherein a cabinet is further disposed on the rack, and the cabinet is used for storing a first measured valve and a second measured valve to be measured.

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