Comprehensive detection device and method for multi-union solenoid valve group

Abstract

The invention discloses a comprehensive detection device and method for a multi-union solenoid valve group, which are applied to detection of the multi-union solenoid valve group with air inlets communicated through a common air inlet channel and air outlets mutually independent, and the detection device comprises a horizontal positioning plate group, a first end part positioning plate group and a second end part positioning plate group, through the design of the three-way airflow channel and the configuration of the first three-way valve group and the second three-way valve group which can be switched, the comprehensive detection of the air tightness in the forward and reverse double airflow directions can be completed under the single clamping state of the multi-union electromagnetic valve group; the technical problems that a traditional detection device is single in function, the reverse sealing performance cannot be evaluated, and the detection efficiency is low due to repeated clamping are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electromagnetic valve testing, in particular to a comprehensive detection device and method for a multi-union electromagnetic valve group. BACKGROUND

[0002] In the prior art, as a key fluid control component, the air tightness of the multi-union electromagnetic valve group directly affects the reliability and safety of the entire system. Currently, the detection device for such valve groups usually uses a certain pressure test gas into the valve group inlet, and judges the sealing state of the valve core and valve seat when the gas flows in the positive direction by observing the pressure change or leakage rate at the downstream outlet.

[0003] However, this traditional testing method has obvious limitations. It can only effectively evaluate the sealing performance of the electromagnetic valve in a single gas flow direction (i.e. the positive flow in the design condition), but cannot simulate and detect the integrity of the sealing structure when the gas flows in the reverse direction. In actual applications, many electromagnetic valve groups will face bidirectional pressure difference or reverse gas flow conditions. If the valve group has sealing failure under reverse gas flow, it may cause system medium backflow, abnormal pressure or function disorder, and even equipment failure or safety accidents.

[0004] Therefore, relying solely on one-way air tightness detection cannot comprehensively evaluate the overall sealing performance of the valve group under actual complex working conditions, leaving potential quality problems. In addition, the existing detection device is usually single-function, and it is difficult to efficiently and accurately test the comprehensive performance of the multi-union electromagnetic valve group, including positive and reverse air tightness, which to some extent restricts the improvement of product quality and optimization of detection efficiency.

[0005] In view of this technical gap, it is urgent to develop a comprehensive detection device and method that can comprehensively and accurately detect the air tightness of the multi-union electromagnetic valve group when the gas flows in the positive and reverse directions, in order to make up for the shortcomings of the existing technology and ensure the reliability of the valve group under bidirectional working conditions. SUMMARY

[0006] In view of the problems existing in the prior art, a comprehensive detection device and method for a multi-union electromagnetic valve group is provided, which realizes comprehensive detection of air tightness in positive and reverse gas flow directions under single clamping state of the multi-union electromagnetic valve group through three-phase gas flow channel design and switchable first and second three-way valve groups, solving the technical problems of single function of traditional detection devices, inability to evaluate reverse sealing performance, and low detection efficiency due to repeated clamping.

[0007] To solve the problems in the prior art, the application provides a comprehensive detection device for a multi-connected electromagnetic valve group, which is applied to detection of a multi-connected electromagnetic valve group with a common inlet connected through a common inlet channel and independent outlets, and comprises: a horizontal positioning plate group, which is internally provided with a common air channel, a communication air channel communicated with each outlet of the multi-connected electromagnetic valve group, and a first detection air channel communicated with the outside; each communication air channel is connected to the common air channel and a first detection air channel through a first three-way valve group, so that the communication air channel can be selectively communicated with the common air channel or the corresponding first detection air channel; a first pressure sensor is installed at an outer port of each first detection air channel; a first end positioning plate group is arranged at one end of the horizontal positioning plate group and abuts against one end of the multi-connected electromagnetic valve group, and the first end positioning plate group is provided with a gas source main channel, a first branch air channel communicated with the common inlet channel of the multi-connected electromagnetic valve group, and a second branch air channel communicated with the common air channel of the horizontal positioning plate group; the gas source main channel is connected to the first branch air channel and the second branch air channel through a second three-way valve group, so that the gas source main channel can be selectively communicated with the first branch air channel or the second branch air channel; a second end positioning plate group is arranged at the other end of the horizontal positioning plate group and abuts against the other end of the multi-connected electromagnetic valve group, and the second end positioning plate group is provided with a second detection air channel communicated with the common inlet channel of the multi-connected electromagnetic valve group, and a second pressure sensor is arranged on the second detection air channel.

[0008] Preferably, a first mounting groove is further formed in the horizontal positioning plate group, the first mounting groove extends along the radial direction of the common air channel and is located between the communication air channel and the first detection air channel; the first three-way valve group comprises: a first valve rod coaxially and slidably arranged in the first mounting groove and having a first position and a second position in the first mounting groove, a first communication port penetrating through the radial direction of the first valve rod is arranged on the rod body of the first valve rod, and a first communication groove extending along the axial direction of the first valve rod is arranged on the rod body of the first valve rod; when the first valve rod moves to the first position, the first communication port connects the communication air channel and the first detection air channel; when the first valve rod moves to the second position, the first communication groove connects the communication air channel and the common air channel; a first electromagnetic coil is fixedly installed on the outside of the horizontal positioning plate group, and an output rod of the first electromagnetic coil is connected with the first valve rod, so as to drive the first valve rod to move between the first position and the second position.

[0009] Preferably, a first reset spring is arranged between the first valve rod and the bottom of the first mounting groove.

[0010] Preferably, a first sealing ring is further sleeved on the first valve rod, and the first sealing ring is located between the first communication port and the first communication groove.

[0011] Preferably, a second installation groove is further arranged in the first end positioning plate set, which extends along the radial direction of the second branch air passage and is located between the air source general passage and the first branch air passage; the second three-way valve set comprises: a second valve rod coaxially arranged in the second installation groove and having a first position and a second position in the second installation groove, a second communication port penetrating through the radial direction of the second valve rod, and a second communication groove extending along the axial direction of the second valve rod; when the second valve rod moves to the first position, the second communication port connects the air source general passage and the first branch air passage; when the second valve rod moves to the second position, the second communication groove connects the air source general passage and the second branch air passage; a second electromagnetic coil fixedly arranged on the outer side of the first end positioning plate set and connected with the output rod of the second valve rod, used for driving the second valve rod to move between the first position and the second position.

[0012] Preferably, a second reset spring is arranged between the second valve rod and the bottom of the second installation groove.

[0013] Preferably, a second sealing ring is further arranged on the second valve rod and located between the second communication port and the second communication groove.

[0014] Preferably, a pressing cylinder is further arranged on the top of the horizontal positioning plate set, and the output rod of the pressing cylinder downward abuts against the top end of the multi-connected electromagnetic valve set.

[0015] Preferably, the distance between the first end positioning plate set and the second end positioning plate set is greater than the length of the multi-connected electromagnetic valve set, and the outer side of the second end positioning plate set is provided with an abutting cylinder, and the output rod of the abutting cylinder is provided with an abutting barrel penetrating through the second end positioning plate set, and the outer port of the abutting barrel abuts against the common air inlet passage port of the multi-connected electromagnetic valve set, and the abutting barrel is further provided with a communication hole in communication with the second detection air passage.

[0016] A comprehensive detection method of a multi-connected electromagnetic valve set, which adopts a comprehensive detection device of a multi-connected electromagnetic valve set, and comprises the following steps: Step one, configure a forward air supply test state, control the first three-way valve set to act, so that the communication air passage is in communication with the first detection air passage, and control the second three-way valve set to act, so that the air source general passage is in communication with the first branch air passage; Step two, inject high-pressure gas into the air source general passage, so that the high-pressure gas flows through the second three-way valve set, the first branch air passage, the common air inlet passage of the multi-connected electromagnetic valve set, and enters the multi-connected electromagnetic valve set in sequence; Step three, sequentially perform on-off operation on each electromagnetic valve in the multi-connected electromagnetic valve set, and detect the pressure change in the corresponding first detection air passage through the first pressure sensor, so as to judge the air flow conduction state of the multi-connected electromagnetic valve set under the action of the forward air flow; Step four, configure the reverse air supply test state, control the first three-way valve group to communicate the communication air channel with the common air channel, and control the second three-way valve group to communicate the air source total channel with the second branch air channel; Step five, inject high-pressure gas into the air source total channel, which flows through the second three-way valve group, the second branch air channel, the common air channel, the first three-way valve group, the communication air channel in sequence, and reversely flows into the outlet of the multi-connected electromagnetic valve group; Step six, turn on and off each electromagnetic valve in the multi-connected electromagnetic valve group in sequence, and detect the pressure change in the second detection air channel through the second pressure sensor to determine the air flow passage condition of the multi-connected electromagnetic valve group under the action of reverse air flow.

[0017] The beneficial effects of the present application compared with the prior art are: The present application realizes the comprehensive detection of the air tightness of the multi-connected electromagnetic valve group in the single clamping state through the three-way air flow passage design and the configuration of the switchable first three-way valve group and the second three-way valve group, solves the technical problems of single function, inability to evaluate the reverse sealing performance, and low detection efficiency caused by repeated clamping of the traditional detection device.

[0018] The first three-way valve group in the horizontal positioning plate group realizes the flexible switching of each outlet between the common air channel and the independent detection air channel, and the second three-way valve group in the first end positioning plate group selectively communicates the inlet passage with the common air channel, thereby constructing a complete forward and reverse test air flow path. In forward test, high-pressure gas flows from the common inlet passage to the valve group; in reverse test, high-pressure gas reversely flows from the common air channel to each outlet. The symmetrical and reversible test structure not only can comprehensively evaluate the sealing performance of each electromagnetic valve under bidirectional pressure difference, but also realizes the automation and precision of the detection process through the integrated pressure sensing system, significantly improves the detection efficiency and reliability, and ensures the use safety of the multi-connected electromagnetic valve group under complex working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of air flow of the comprehensive detection device of the multi-connected electromagnetic valve group of the present application in forward air flow test.

[0020] Figure 2 is a schematic diagram of air flow of the comprehensive detection device of the multi-connected electromagnetic valve group of the present application in reverse air flow test.

[0021] Figure 3 is a perspective view of the comprehensive detection device of the multi-connected electromagnetic valve group of the present application installed on a test workbench.

[0022] Figure 4It is a comprehensive detection device of a multi-connected electromagnetic valve group according to the present application in the perspective view of the first kind.

[0023] Figure 5 It is a comprehensive detection device of a multi-connected electromagnetic valve group according to the present application in the perspective view of the second kind.

[0024] Figure 6 It is a front view of a comprehensive detection device of a multi-connected electromagnetic valve group according to the present application.

[0025] Figure 7 It is a sectional view at A-A section of 9. Figure 6

[0026] Figure 8 It is a sectional view at B-B section of 9. Figure 6

[0027] Figure 9 It is a top view of a comprehensive detection device of a multi-connected electromagnetic valve group according to the present application.

[0028] Figure 10 It is a sectional view at C-C section of 9.

[0029] Figure 11 It is a schematic view of a comprehensive detection device of a multi-connected electromagnetic valve group according to the present application and a multi-connected electromagnetic valve group.

[0030] The figure label is: 1, multi-connected electromagnetic valve group; 11, air inlet; 12, common air passage; 13, air outlet; 2, test workbench; 3, horizontal positioning plate group; 31, common air passage; 32, communication air passage; 33, first detection air passage; 41, first three-way valve group; 411, first valve rod; 4111, first communication port; 4112, first communication groove; 412, first electromagnetic coil; 413, first reset spring; 414, first sealing ring; 42, first pressure sensor; 5, first end positioning plate group; 51, air source total passage; 52, first branch air passage; 53, second branch air passage; 55, first stop valve; 6, second end positioning plate group; 61, second detection air passage; 63, abutting air cylinder; 64, abutting cylinder; 641, communication hole; 65, second stop valve; 71, second three-way valve group; 711, second valve rod; 7111, second communication port; 7112, second communication groove; 712, second electromagnetic coil; 713, second reset spring; 714, second sealing ring; 72, second pressure sensor; 8, pressing air cylinder; 9, total air source. DETAILED DESCRIPTION

[0031] In order to further understand the features, technical means and specific purposes and functions achieved by the present application, the present application is described in further detail below in combination with the drawings and specific embodiments. ​​

[0032] As Figures 1 to 8 shown, a comprehensive detection device of a multi-connected electromagnetic valve group 1 is applied to detect a multi-connected electromagnetic valve group 1 whose intake ports 11 are connected through a common intake passage 12 and whose gas outlets 13 are independent of each other, and the device comprises: a horizontal positioning plate group 3, which is internally provided with a common air passage 31, a plurality of communication air passages 32 connected to the gas outlets 13 of the multi-connected electromagnetic valve group 1, and a plurality of first detection air passages 33 connected to the outside, each communication air passage 32 is connected to the common air passage 31 and a first detection air passage 33 through a first three-way valve group 41, so that the communication air passage 32 can be selectively communicated with the common air passage 31 or the corresponding first detection air passage 33, and a first pressure sensor 42 is installed at the outer port of each first detection air passage 33; a first end positioning plate group 5, which is arranged at one end of the horizontal positioning plate group 3 and abuts against one end of the multi-connected electromagnetic valve group 1, and is provided with a gas source total passage 51, a first branch air passage 52 connected to the common intake passage 12 of the multi-connected electromagnetic valve group 1, and a second branch air passage 53 connected to the common air passage 31 of the horizontal positioning plate group 3, the gas source total passage 51 is connected to the first branch air passage 52 and the second branch air passage 53 through a second three-way valve group 71, so that the gas source total passage 51 can be selectively communicated with the first branch air passage 52 or the second branch air passage 53; a second end positioning plate group 6, which is arranged at the other end of the horizontal positioning plate group 3 and abuts against the other end of the multi-connected electromagnetic valve group 1, and is provided with a second detection air passage 61 connected to the common intake passage 12 of the multi-connected electromagnetic valve group 1, and a second pressure sensor 72 is installed on the second detection air passage 61.

[0033] The device mainly comprises the horizontal positioning plate group 3, the first end positioning plate group 5 and the second end positioning plate group 6. The horizontal positioning plate group 3 is internally integrated with the common air passage 31, a plurality of communication air passages 32 connected to the gas outlets 13 of the multi-connected electromagnetic valve group 1 one by one, and a plurality of first detection air passages 33 connected to the outside. Each communication air passage 32 is connected to the common air passage 31 or its corresponding first detection air passage 33 through a first three-way valve group 41, each first detection air passage 33 is provided with a high-precision first pressure sensor 42 at the outer port, which is used for monitoring the pressure state of each independent gas outlet 13.

[0034] The first end positioning plate group 5 is arranged at one end of the horizontal positioning plate group 3 and tightly abuts against the end of the multi-connected electromagnetic valve group 1. Inside the first end positioning plate group 5, a gas source main channel 51, a first branch gas channel 52 communicating with the common gas inlet channel 12 of the multi-connected electromagnetic valve group 1, and a second branch gas channel 53 communicating with the common gas channel 31 of the horizontal positioning plate group 3 are arranged. A second three-way valve group 71 is arranged on the gas source main channel 51 and used to switch the gas flow from the gas source 9 to the first branch gas channel 52 or the second branch gas channel 53, thereby fundamentally changing the input path of the test gas flow.

[0035] The second end positioning plate group 6 is arranged at the other end of the horizontal positioning plate group 3 and also abuts against the other end of the multi-connected electromagnetic valve group 1. A second test gas channel 61 communicating with the common gas inlet channel 12 of the multi-connected electromagnetic valve group 1 is arranged on the second end positioning plate group 6, and a second pressure sensor 72 is arranged on the second test gas channel 61 and used to monitor the pressure of the common gas inlet channel 12 in a specific test mode.

[0036] The entire device is mounted on a stable test workbench 2. The horizontal positioning plate group 3 also integrates an electrical connector for providing controllable on-off electrical signals for each electromagnetic coil of the multi-connected electromagnetic valve group 1 during the test. In order to ensure the safety and precise control of the test, a first shutoff valve 55 for turning on and off the entire gas source is arranged on the first end positioning plate group 5, and a second shutoff valve 65 for turning on and off the second test gas channel 61 is arranged on the second end positioning plate group 6.

[0037] The device performs two test states by coordinating the control of the three-way valve groups and the electromagnetic valve coils: Forward gas supply test: In this state, all the first three-way valve groups 41 are actuated to connect the respective communication gas channels 32 and the corresponding first test gas channels 33, thereby closing the connection between the gas outlets 13 and the common gas channels 31. At the same time, the second three-way valve group 71 is actuated to connect the gas source main channel 51 and the first branch gas channel 52. During the test, high-pressure gas is injected into the gas source main channel 51, and the gas will enter the common gas inlet channel 12 of the multi-connected electromagnetic valve group 1 through the first branch gas channel 52. By controlling the on-off of the electromagnetic coils on the valve group through the program, the change in the reading of each first pressure sensor 42 can be observed, and the opening and closing response and air tightness of each electromagnetic valve under the action of the forward gas flow can be accurately detected.

[0038] Reverse air supply test: in this state, all the first three-way valve groups 41 are switched to connect the respective communication air passages 32 with the common air passage 31. Meanwhile, the second three-way valve groups 71 are switched to connect the air source total passage 51 with the second branch air passage 53. During the test, the high-pressure gas no longer enters the common air inlet passage 12, but directly enters the common air passage 31 of the horizontal positioning plate group 3 through the second branch air passage 53 and flows reversely into each air outlet 13. At this time, by controlling the on-off of the electromagnetic coil and observing the reading change of the second pressure sensor 72 on the second end positioning plate group 6, the sealing performance and air flow passage condition of each electromagnetic valve under the action of reverse air flow can be effectively tested.

[0039] As shown in Figure 7 The horizontal positioning plate group 3 is also provided with a first installation slot extending along the radial direction of the common air passage 31 and located between the communication air passage 32 and the first detection air passage 33; the first three-way valve group 41 comprises: A first valve rod 411 is coaxially and slidably arranged in the first installation slot and has a first position and a second position in the first installation slot, and a radial first communication port 4111 and a first communication groove 4112 extending along the axial direction of the first valve rod 411 are arranged on the rod body of the first valve rod 411; When the first valve rod 411 moves to the first position, the first communication port 4111 connects the communication air passage 32 with the first detection air passage 33; when the first valve rod 411 moves to the second position, the first communication groove 4112 connects the communication air passage 32 with the common air passage 31; A first electromagnetic coil 412 is fixedly installed on the outside of the horizontal positioning plate group 3, and the output rod thereof is connected with the first valve rod 411 for driving the first valve rod 411 to move between the first position and the second position.

[0040] The valve group mainly comprises the first valve rod 411 and the first electromagnetic coil 412. The first valve rod 411 is coaxially and slidably arranged in the first installation slot, and a special flow passage structure is processed on the rod body of the first valve rod 411, i.e., a radial first communication port 4111 and a first communication groove 4112 extending along the axial direction of the first valve rod 411. Through external driving, the first valve rod 411 has two determined working positions in the installation slot.

[0041] When the forward air supply test is needed, the first electromagnetic coil 412 is energized to drive the first valve rod 411 to move to the first position. In this position, the first communication port 4111 on the first valve rod 411 is just aligned with the communication air passage 32 and the first detection air passage 33, thereby connecting the two passages and isolating the passage with the common air passage 31.

[0042] When converted to reverse gas supply test, the first electromagnetic coil 412 drives the first valve stem 411 to move to the second position. At this time, the first communication port 4111 moves away, and the first communication groove 4112 on the first valve stem 411 spans the communication air duct 32 and the common air duct 31, establishing a bridge between the two, thereby realizing the switching of the gas circuit.

[0043] The first electromagnetic coil 412, as a driving source, is fixedly installed on the outside of the horizontal positioning plate group 3, and its output rod is connected with the built-in first valve stem 411, converting the electric control signal into the linear displacement of the valve stem, thereby accurately and quickly driving the first valve stem 411 to move between the first position and the second position, completing the automatic conversion of the test state.

[0044] As shown in Figure 7 , the first reset spring 413 is arranged between the first valve stem 411 and the bottom of the first installation groove.

[0045] The first reset spring 413 is always in a compressed state, providing a continuous and stable reset force for the first valve stem 411 towards its initial default position (for example, the first position). When the first electromagnetic coil 412 is powered off, the first valve stem 411 can automatically, quickly and accurately return to the initial position under the action of the first reset spring 413, which provides a certain fail-safe state for the entire test system, improving the safety and controllability of the device. At the same time, the spring force helps to overcome the friction and sealing resistance during the movement of the valve stem, ensuring smooth and accurate switching, and effectively eliminating the backlash that may be caused by the gap between components, thereby improving the accuracy and repeatability of the gas circuit switching. In addition, this reset mechanism also serves as an effective supplement to the driving force, working together with the first electromagnetic coil 412 to ensure the long-term stability of the valve group under frequent switching conditions.

[0046] As shown in Figure 7 , the first valve stem 411 is also sleeved with a first sealing ring 414, which is located between the first communication port 4111 and the first communication groove 4112.

[0047] The first sealing ring 414 dynamically seals the annular gap between the valve stem and the inner wall of the installation groove. Whether the first valve stem 411 is in the first position or the second position, the first sealing ring 414 can effectively isolate the communication air duct 32, the first detection air duct 33 and the common air duct 31, ensuring that the gas flow can only pass through the pre-set path, i.e. through the first communication port 4111 or the first communication groove 4112. This completely avoids the distortion of pressure readings or test errors caused by internal leakage, providing high authenticity and accuracy for the data collected by the first pressure sensor 42.

[0048] As shown in Figure 8As shown, the first end positioning plate group 5 is also provided with a second installation groove, which extends along the radial direction of the second branch air passage 53 and is located between the air source general passage 51 and the first branch air passage 52; the second three-way valve group 71 comprises: The second valve rod 711 is coaxially and slidably arranged in the second installation groove and has a first position and a second position in the second installation groove. The second valve rod 711 is provided with a second communication port 7111 penetrating in the radial direction and a second communication groove 7112 extending in the axial direction. When the second valve rod 711 moves to the first position, the second communication port 7111 connects the air source general passage 51 and the first branch air passage 52; when the second valve rod 711 moves to the second position, the second communication groove 7112 connects the air source general passage 51 and the second branch air passage 53. The second electromagnetic coil 712 is fixedly installed on the outer side of the first end positioning plate group 5, and its output rod is connected with the second valve rod 711, for driving the second valve rod 711 to move between the first position and the second position.

[0049] The second three-way valve group 71 is a general switch for controlling the direction of test gas flow, and its structure and working principle are the same as those of the first three-way valve group 41. The core of the valve group comprises the second valve rod 711 and the second electromagnetic coil 712. The second valve rod 711 is coaxially and slidably arranged in the second installation groove, and its rod body is also provided with the second communication port 7111 penetrating in the radial direction and the second communication groove 7112 extending in the axial direction. Through external driving, the second valve rod 711 has two determined working positions in the installation groove.

[0050] When the device performs forward gas supply test, the second electromagnetic coil 712 drives the second valve rod 711 to move to its first position. In this state, the second communication port 7111 accurately docks and communicates with the air source general passage 51 and the first branch air passage 52, so that the test gas can enter the common air inlet passage 12 of the multi-connection electromagnetic valve group 1.

[0051] When the device is converted to reverse gas supply test, the second electromagnetic coil 712 drives the second valve rod 711 to move to its second position. At this time, the second communication port 7111 moves away, and the second communication groove 7112 spans the air source general passage 51 and the second branch air passage 53, thereby establishing a communication bridge therebetween and guiding the test gas to the common air passage 31 of the horizontal positioning plate group 3.

[0052] The second electromagnetic coil 712 is fixedly installed on the outer side of the first end positioning plate group 5, and its output rod is directly connected with the second valve rod 711. Through receiving electric control signals, the second electromagnetic coil 712 accurately drives the second valve rod 711 to move between the two working positions, thereby realizing the global switching of the test mode of the whole device.

[0053] AsFigure 8 As shown, the second valve rod 711 is provided with a second reset spring 713 between the second valve rod 711 and the bottom of the second installation groove.

[0054] The principle and function of the second reset spring 713 are the same as those of the first reset spring 413. In the event of accidental power failure, the spring force can drive the second valve rod 711 to automatically reset to the default safe position (such as cutting off the gas source or connecting the forward test pipeline). This not only improves the safety performance of the entire detection device, avoids test interruption or unclear gas path state, but also ensures that the valve rod can quickly and accurately disengage when the electromagnetic coil driving ends, and forms a complement with the driving force of the coil, making the switching action more decisive and in place, further enhancing the long-term stability and repeatability of the gas path switching.

[0055] As shown in Figure 8 The second valve rod 711 is further provided with a second sealing ring 714, which is located between the second communication port 7111 and the second communication groove 7112.

[0056] The second sealing ring 714 constitutes the dynamic sealing of the second three-way valve group 71, ensuring that the second valve rod 711 can effectively isolate adjacent air passages regardless of its position in the switching process or its stable position at a certain working position, and ensuring that the test gas flow strictly follows the preset path. This is crucial for maintaining the stability and accuracy of the entire detection system, especially the gas source input end, and provides another solid guarantee for the accuracy of the forward and reverse test modes.

[0057] As shown in Figure 8 The top of the horizontal positioning plate group 3 is further provided with a pressing cylinder 8, and the output rod of the pressing cylinder 8 downward abuts against the top end of the multi-union electromagnetic valve group 1.

[0058] In operation, the pressing cylinder 8 outputs a controllable downward force to stably press the valve group as a whole towards the installation plane of the horizontal positioning plate group 3. This force is transmitted through the valve group shell, so that the two ends thereof are tightly pressed against the abutting surfaces of the first end positioning plate group 5 and the second end positioning plate group 6, respectively. This active pressing mechanism from top to bottom effectively eliminates the problem of poor sealing that may be caused by machining tolerances or assembly gaps, and forms uniform and stable sealing pressure between the components, thereby establishing a highly reliable sealing environment inside the test circuit.

[0059] As shown in Figures 9 to 11As shown, the distance between the first end positioning plate group 5 and the second end positioning plate group 6 is greater than the length of the multi-connection electromagnetic valve group 1, and the outer side of the second end positioning plate group 6 is provided with an abutting cylinder 63, and the output rod of the abutting cylinder 63 is provided with an abutting barrel 64 penetrating through the second end positioning plate group 6, and the outer port of the abutting barrel 64 abuts at the port of the common inlet passage 12 of the multi-connection electromagnetic valve group 1, and the abutting barrel 64 is further provided with a communication hole 641 in communication with the second detection gas channel 61.

[0060] In order to realize the rapid clamping of the multi-connection electromagnetic valve group 1 and the automatic sealing connection of the gas circuit, the distance between the first end positioning plate group 5 and the second end positioning plate group 6 is designed to be slightly greater than the total length of the multi-connection electromagnetic valve group 1, thereby providing necessary stroke space for lateral compression.

[0061] An abutting cylinder 63 is arranged on the outer side of the second end positioning plate group 6. The output rod of the abutting cylinder 63 is fixedly connected with an abutting barrel 64 penetrating through the second end positioning plate group 6, and the outer port of the abutting barrel 64 is designed to abut at the port of the common inlet passage 12 of the multi-connection electromagnetic valve group 1. The abutting barrel 64 is further provided with a radial communication hole 641 in communication with the second detection gas channel 61 in the second end positioning plate group 6.

[0062] In the working process, after the valve group is placed on the horizontal positioning plate group 3, the abutting cylinder 63 is actuated to push the abutting barrel 64 to move forward until the outer port of the abutting barrel 64 is tightly pressed into the port of the common inlet passage 12 of the valve group, thereby forming a reliable end face seal. This action simultaneously completes two key functions: one is to cooperate with the top compression cylinder 8 in the axial direction to firmly clamp the valve group between the first and second end positioning plate groups 6; the other is to automatically and accurately connect the second detection gas channel 61 with the common inlet passage 12 of the valve group through the communication hole 641 on the abutting barrel 64, thereby establishing the key detection gas circuit required in reverse testing.

[0063] A comprehensive detection method of a multi-connection electromagnetic valve group 1, which adopts a comprehensive detection device of a multi-connection electromagnetic valve group 1, and comprises the following steps: Step one, configure a forward gas supply test state, control the first three-way valve group 41 to actuate, so that the communication gas channel 32 is in communication with the first detection gas channel 33, and simultaneously control the second three-way valve group 71 to actuate, so that the gas source total passage 51 is in communication with the first branch gas channel 52; Step two, inject high-pressure gas into the gas source total passage 51, so that it flows through the second three-way valve group 71, the first branch gas channel 52, and the common inlet passage 12 of the multi-connection electromagnetic valve group 1 in sequence, and enters the multi-connection electromagnetic valve group 1; Step three, the on-off power operation is sequentially performed on each electromagnetic valve in the multi-connected electromagnetic valve group 1, the pressure change in the corresponding first detection air channel 33 is detected by the first pressure sensor 42, so as to judge the air flow conduction state of the multi-connected electromagnetic valve group 1 under the action of the forward air flow; Step four, the reverse air supply test state is configured, the first three-way valve group 41 is controlled to act, the communication air channel 32 is communicated with the common air channel 31, and the second three-way valve group 71 is controlled to act, the air source total passage 51 is communicated with the second branch air channel 53; Step five, the high-pressure gas is injected into the air source total passage 51, and sequentially flows through the second three-way valve group 71, the second branch air channel 53, the common air channel 31, the first three-way valve group 41, the communication air channel 32, and reversely flows into the air outlet 13 of the multi-connected electromagnetic valve group 1; Step six, the on-off power operation is sequentially performed on each electromagnetic valve in the multi-connected electromagnetic valve group 1, the pressure change in the second detection air channel 61 is detected by the second pressure sensor 72, so as to judge the air flow conduction state of the multi-connected electromagnetic valve group 1 under the action of the reverse air flow.

[0064] The above embodiment only expresses one or several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the protection scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A comprehensive detection device for a multi-connection electromagnetic valve group, applied to detect a multi-connection electromagnetic valve group with a common inlet channel and independent outlets, characterized in that, The application relates to a horizontal positioning plate group, a first end positioning plate group and a second end positioning plate group. The horizontal positioning plate group is internally provided with a common air channel, a communication air channel communicated with each air outlet of a multi-connection electromagnetic valve group and a first detection air channel communicated with the outside, each communication air channel is connected to the common air channel and a first detection air channel through a first three-way valve group, so that the communication air channel can be selectively communicated with the common air channel or the corresponding first detection air channel, and a first pressure sensor is arranged at the outer port of each first detection air channel; The first end positioning plate group is arranged at one end of the horizontal positioning plate group and abuts against one end of the multi-connection electromagnetic valve group, the first end positioning plate group is provided with a gas source total channel, a first branch air channel communicated with the common air inlet channel of the multi-connection electromagnetic valve group and a second branch air channel communicated with the common air channel of the horizontal positioning plate group, the gas source total channel is connected to the first branch air channel and the second branch air channel through a second three-way valve group, so that the gas source total channel can be selectively communicated with the first branch air channel or the second branch air channel; The second end positioning plate group is arranged at the other end of the horizontal positioning plate group and abuts against the other end of the multi-connection electromagnetic valve group, the second end positioning plate group is provided with a second detection air channel communicated with the common air inlet channel of the multi-connection electromagnetic valve group, and a second pressure sensor is arranged on the second detection air channel.

2. The integrated testing device of a multiple electromagnetic valve group according to claim 1, wherein The horizontal positioning plate group is further provided with a first mounting groove, the first mounting groove extends along the radial direction of the common air channel and is located between the communication air channel and the first detection air channel; the first three-way valve group comprises: A first valve rod is coaxially arranged in the first mounting groove and has a first position and a second position in the first mounting groove, a first communication port penetrating in the radial direction is arranged on the rod body of the first valve rod, and a first communication groove extending in the axial direction is arranged on the rod body of the first valve rod; When the first valve rod moves to the first position, the first communication port connects the communication air channel and the first detection air channel; when the first valve rod moves to the second position, the first communication groove connects the communication air channel and the common air channel; A first electromagnetic coil is fixedly arranged on the outer side of the horizontal positioning plate group, an output rod of the first electromagnetic coil is connected with the first valve rod, and the first electromagnetic coil is used for driving the first valve rod to move between the first position and the second position.

3. The integrated testing device of a multiple electromagnetic valve group according to claim 2, wherein A first reset spring is arranged between the first valve rod and the bottom of the first mounting groove.

4. The integrated testing device of a multiple solenoid valve group according to claim 2 or 3, characterized in that, A first sealing ring is further arranged on the first valve rod and located between the first communication port and the first communication groove.

5. The integrated testing device of a multiple electromagnetic valve group according to claim 1, wherein The first end positioning plate group is further provided with a second mounting groove, the second mounting groove extends along the radial direction of the second branch air channel and is located between the gas source total channel and the first branch air channel; the second three-way valve group comprises: A second valve rod is coaxially arranged in the second mounting groove and has a first position and a second position in the second mounting groove, a second communication port penetrating in the radial direction is arranged on the rod body of the second valve rod, and a second communication groove extending in the axial direction is arranged on the rod body of the second valve rod; When the second valve rod moves to the first position, the second communication port connects the gas source total channel and the first branch air channel; when the second valve rod moves to the second position, the second communication groove connects the gas source total channel and the second branch air channel; A second electromagnetic coil is fixedly arranged on the outer side of the first end positioning plate group, an output rod of the second electromagnetic coil is connected with the second valve rod, and the second electromagnetic coil is used for driving the second valve rod to move between the first position and the second position.

6. The integrated testing device of a multiple solenoid valve group according to claim 5, wherein The second reset spring is arranged between the second valve rod and the bottom of the second mounting groove.

7. The integrated testing device of a multiple solenoid valve group according to claim 5 or 6, wherein The second sealing ring is further sleeved on the second valve rod and located between the second communication port and the second communication groove.

8. The integrated testing device of a multiple solenoid valve group according to any one of claims 1 to 3, wherein The top of the horizontal positioning plate group is further provided with a pressing cylinder, and the output rod of the pressing cylinder downward abuts against the top end of the multi-connected electromagnetic valve group.

9. The integrated testing device of a multiple solenoid valve group according to any one of claims 1 to 3, wherein The distance between the first end positioning plate group and the second end positioning plate group is greater than the length of the multi-connected electromagnetic valve group, and the outer side of the second end positioning plate group is provided with an abutting cylinder, and the output rod of the abutting cylinder is provided with an abutting barrel penetrating through the second end positioning plate group, and the outer port of the abutting barrel abuts against the common inlet passage port of the multi-connected electromagnetic valve group.

10. A method for comprehensive detection of a multiple electromagnetic valve group, using the comprehensive detection device for a multiple electromagnetic valve group according to any one of claims 1 to 3, characterized in that, The method comprises the following steps: Step one, configure a forward gas supply test state, control the first three-way valve group to act, make the communication gas channel and the first detection gas channel communicate, at the same time control the second three-way valve group to act, make the gas source total channel and the first branch gas channel communicate; Step two, inject high pressure gas into the gas source total channel, make it flow through the second three-way valve group, the first branch gas channel, the common inlet passage of the multi-connected electromagnetic valve group in turn, and enter the multi-connected electromagnetic valve group; Step three, turn on and off the power of each electromagnetic valve in the multi-connected electromagnetic valve group in turn, detect the pressure change in the corresponding first detection gas channel through the first pressure sensor, to judge the gas flow conduction condition of the multi-connected electromagnetic valve group under the action of forward gas flow; Step four, configure a reverse gas supply test state, control the first three-way valve group to act, make the communication gas channel and the common gas channel communicate, at the same time control the second three-way valve group to act, make the gas source total channel and the second branch gas channel communicate; Step five, inject high pressure gas into the gas source total channel, make it flow through the second three-way valve group, the second branch gas channel, the common gas channel, the first three-way valve group, the communication gas channel in turn, and flow into the gas outlet of the multi-connected electromagnetic valve group reversely; Step six, turn on and off the power of each electromagnetic valve in the multi-connected electromagnetic valve group in turn, detect the pressure change in the second detection gas channel through the second pressure sensor, to judge the gas flow condition of the multi-connected electromagnetic valve group under the action of reverse gas flow.

Images