A valve detection device

Abstract

The present invention discloses a valve detection device, which relates to the field of valve detection technology. It includes a detection host, a water pool, a base plate, an electric rotating rod and a detection component. The present invention uses an adjusting motor to drive the flying shaft protection end to rotate, and then uses the flying shaft protection end to drive the valve shaft to rotate, so that the detection device can automatically adjust the opening and closing of the valve plate according to different detection requirements, avoiding manual opening and closing, and improving the detection accuracy and efficiency. The anti-flying shaft component is used to transmit the impact force of the valve shaft flying out to the unloading spring. The unloading spring converts the impact force by compressing itself to achieve the purpose of absorbing the impact force and prevent the valve shaft from flying out directly to cause personal injury; when the unloading plate slides to the alarm position, the alarm is triggered by the first contact block, and the second piezoelectric ceramic in the alarm is pressurized and generates an electrical signal. After the electrical signal is transmitted to the control system, the control system sends an alarm to the staff, thereby achieving the purpose of preventing the flying shaft.

Description

Technical Field

[0001] The invention relates to the technical field of valve detection, in particular to a valve detection device. Background Art

[0002] The butterfly valve seal test equipment is used to test the sealing performance of the butterfly valve in the closed state to ensure that the butterfly valve can effectively prevent fluid leakage, which is one of the key indicators for measuring the quality of the butterfly valve. Through testing, the strength of the butterfly valve housing can be evaluated to ensure that it will not rupture or permanently deform under the rated working pressure and a certain overpressure, thereby ensuring the reliability and stability of the butterfly valve in practical applications.

[0003] At present, the existing detection equipment has relatively single functions. During the entire detection process, a large amount of work requires the cooperation of detection personnel, such as manually placing the valve body and adjusting the valve body position. The addition of manual labor limits the accuracy of the detection. After the injection of high-pressure water, if there are quality problems with the valve body, there is a risk of the valve shaft flying out, causing damage to personnel and equipment. Moreover, when the detection equipment itself has problems such as aging and leakage, it is often difficult to self-check, resulting in deviations in the accuracy of the detection data. Summary of the invention

[0004] The object of the present invention is to provide a valve detection device to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a valve detection device, including a detection host, a water pool is provided on the detection host, an electric rotating rod is installed on the detection host, a base plate is installed on the electric rotating rod, and a detection component is installed on the base plate; the detection component includes a positioning component, a top pressure component and an anti-flying shaft component, the positioning component is symmetrically and slidably installed on the base plate, the anti-flying shaft component is slidably installed on the base plate, the anti-flying shaft component is located on one side of the positioning component, the top pressure component is installed on the base plate, the top pressure component is located between the positioning components, and the top pressure component is slidably connected to the positioning components on both sides.

[0006] A control system is provided in the detection host, and the control system is used to control the entire valve detection device.

[0007] Furthermore, the top pressure assembly includes an extrusion block and a limiting bracket, a limiting cylinder is symmetrically installed on the extrusion block, the limiting bracket is installed on the base plate, a limiting rod is installed on the bottom end of the limiting bracket, a plurality of protrusions are provided on the limiting rod, a plurality of sliding grooves are provided on the limiting cylinder, the positions and numbers of the sliding grooves correspond to the protrusions, the shapes of the sliding grooves match the protrusions, the protrusions are slidably connected to the sliding grooves, the limiting rod is slidably connected to the limiting cylinder, and a sealing disk is installed on the bottom end of the extrusion block.

[0008] Furthermore, a leakage ring groove is provided on the sealing disk, a touch rod is slidably installed in the sealing disk, a floating block is installed at one end of the touch rod, a first elastic membrane is installed in the sealing disk, a first piezoelectric ceramic is installed between the first elastic membranes, the touch rod and the first piezoelectric ceramic are positioned correspondingly, the floating block is located in the leakage ring groove, a first sealing sheet and a second sealing sheet are installed at the bottom end of the sealing disk, and an electric valve is provided on the sealing disk.

[0009] When the first sealing plate is defective or aged, during the valve body seal inspection, high-pressure water will seep out along the gap between the first sealing plate and the valve. At this time, the seeped water will flow into the leakage ring groove. As the water accumulates, under the action of buoyancy, the floating block floats up and drives the touch rod to rise. The touch rod rises and squeezes the first elastic membrane. The first elastic membrane is pressurized and squeezes the first piezoelectric ceramic. The first piezoelectric ceramic is pressurized and generates an electrical signal. After receiving the electrical signal, the control system stops the inspection and sends a maintenance prompt to the staff to avoid detection errors due to problems with the detection device itself.

[0010] Furthermore, a transverse groove and an oblique groove are provided on the extrusion block, the transverse groove is communicated with the oblique groove, and the extrusion block is slidably connected with the positioning assembly through the transverse groove and the oblique groove.

[0011] During the preliminary positioning process of the positioning assembly, the transmission slide bar on the positioning assembly slides in the transverse groove. When the positioning assembly is corrected, as the first electric telescopic rod extends forward, the base block drives the transmission slide bar to enter the inclined groove, and the transmission slide bar squeezes the extrusion block through the inclined groove. Since the limit cylinder on the extrusion block is connected to the limit rod for sliding up and down, the compressed extrusion block slides downward along the limit rod, and the extrusion block drives the sealing disk downward. When the positioning assembly is corrected, as the first electric telescopic rod continues to extend forward, the sealing disk contacts the valve body and presses the valve body tightly. The first sealing sheet seals the sealing disk and the upper end of the valve body, the sealing gasket on the substrate forms a seal between the valve body and the substrate, and the second sealing sheet presses on the flange of the valve body, thereby completing the sealing before the valve is tested.

[0012] Furthermore, the positioning assembly includes a first electric telescopic rod and a slide rail, the first electric telescopic rod is installed on the base plate, the slide rail is installed on the base plate, a base block is installed on the output shaft of the first electric telescopic rod, the base block is slidably connected to the slide rail, a transmission slide rod is installed on the base block, the transmission slide rod is slidably installed in the transverse groove and the inclined groove, a first slide rod is slidably installed on the base block, a wheel plate is installed at one end of the first slide rod, two sets of positioning wheels are symmetrically and rotatably installed on the wheel plate, and a first spring is installed between the wheel plate and the base block.

[0013] Place the valve to be tested on the substrate, and the control system turns on the first electric telescopic rod. The output shaft of the first electric telescopic rod drives the entire positioning assembly to move forward, and the two positioning assemblies move forward and approach each other. When the positioning wheels on the positioning assembly touch the side of the valve, the valve is pushed to move together. Driven by the positioning wheels on both sides, the valve is gradually centered, and the positioning wheels complete the preliminary positioning and clamping of the valve. At this time, the valve is aligned with the sealing disk.

[0014] Furthermore, the positioning assembly also includes a second slide bar, which is slidably mounted on the base block, a deviation correction block is mounted on one end of the second slide bar, and a second spring is mounted between the second slide bar and the base block.

[0015] After the initial positioning is completed, the output shaft of the first electric telescopic rod extends further forward. Since the positioning wheel on the wheel plate is against the valve and cannot move, at this time, under the action of pressure, the base block extends further forward and produces relative displacement with the first sliding rod on the wheel plate. The base block applies pressure to the first spring, and the first spring is compressed. The first spring transmits the elastic force to the positioning wheel through the wheel plate, so that the positioning wheel clamps the valve more tightly and the valve is further centered. Subsequently, the base block drives the correction block to contact the cylindrical stuffing box on the valve body through the second sliding rod. The correction block pushes the stuffing box, so that the stuffing box drives the valve on the positioning wheel to deflect around the center axis of the valve plate. Under the squeezing of the correction blocks on both sides, the angle of the stuffing box is gradually corrected, thereby realizing the correction of the valve angle. At this time, the end of the valve stem passing through the stuffing box is aligned with the fitting groove on the protective shell.

[0016] Furthermore, the anti-flying shaft assembly includes a second electric telescopic rod, which is installed on a base plate, an adjusting motor is installed on the output shaft of the second electric telescopic rod, the adjusting motor is slidably connected to the base plate, a flying shaft protection end is installed on the output shaft of the adjusting motor, and an alarm is installed in the flying shaft protection end.

[0017] Furthermore, the flying shaft protective end includes a protective shell, which is provided with an interlocking groove, the shape of which matches the shape of the valve stem end, a force unloading plate is slidably installed in the protective shell, a first contact block is provided on the force unloading plate, a force unloading spring is installed between the force unloading plate and the protective shell, the protective shell is installed on the output shaft of the second electric telescopic rod, an alarm is installed in the protective shell, and the first contact block corresponds to the position of the alarm.

[0018] After the valve body is sealed, the control system turns on the second electric telescopic rod, the second electric telescopic rod drives the adjusting motor to extend forward, the adjusting motor drives the flying shaft protection end to extend forward, so that the fitting groove on the protection shell is fitted with the end of the valve shaft, then, the adjusting motor is started, the adjusting motor output shaft drives the flying shaft protection end to rotate, the flying shaft protection end drives the valve shaft to rotate, and the valve shaft drives the valve plate to rotate and open and close.

[0019] When it is necessary to test the sealing of the valve body, the control system puts the valve plate in a half-open state and closes the electric valve on the sealing disk. Water is injected into the valve through a sprinkler to pressurize it, and then a pressure maintenance test is performed. During the pressure maintenance period, the water pressure is tested using the pressure sensor in the sprinkler. When the change in water pressure is within the standard value range, it proves that the valve body sealing is qualified. When the change exceeds the standard value, it is unqualified.

[0020] When the sealing of the valve plate is required, the control system opens the electric valve on the sealing disk and injects water into the valve through the sprinkler. The control system closes the valve plate, and a closed detection chamber is formed between the bottom of the valve plate and the base plate. The control system opens the electric rotating rod, and the electric rotating rod drives the base plate to rotate and tilt, so that excess water above the base plate flows out of the electric valve into the water pool. After that, the base plate is reset, and the closed detection chamber is pressurized. After that, a pressure maintenance test is performed. During the pressure maintenance test, the water pressure is tested using the pressure sensor in the sprinkler. When the water pressure change is within the standard value range, it proves that the valve plate sealing is qualified. When the change exceeds the standard value, it is unqualified.

[0021] Furthermore, the alarm includes a force transmission block and a striker, the force transmission block is slidably installed in the protective shell, a reset spring is installed between the force transmission block and the protective shell, the striker is installed in the protective shell, a second contact block is provided on the force transmission block, a second elastic membrane is installed in the force transmission block, a second piezoelectric ceramic is installed between the second elastic membranes, and the striker corresponds to the second piezoelectric ceramic in position.

[0022] When there is a quality defect in the valve and the valve shaft is affected by water pressure and flies out of the constraint during the inspection process, it will slide along the fitting groove in the protective shell and hit the unloading plate. The unloading plate slides in the protective shell due to the impact and transmits the impact force to the unloading spring. The unloading spring absorbs the impact force and compresses, thereby absorbing the impact force and preventing the valve shaft from flying out directly and causing personal injury and damage to the device. When the unloading plate slides to the alarm position, the first contact block on it squeezes the second contact block. After the second contact block is compressed, it drives the force transmission block to slide in the protective shell. The displacement of the force transmission block causes the striker to be squeezed with the second elastic membrane. After the second elastic membrane is compressed, it squeezes the second piezoelectric ceramic inside. According to the piezoelectric effect, the second piezoelectric ceramic is compressed and generates an electrical signal. After the electrical signal is transmitted to the control system, the control system sends an alarm to the staff, thereby achieving the purpose of preventing the flying shaft.

[0023] Furthermore, a sprinkler is installed on the substrate, a sealing gasket is provided on the surface of the substrate, the sprinkler is located at the center of the valve detection position, the sprinkler is connected to a water supply device, and the water supply device is used to deliver detection water to the sprinkler. A pressure sensor is provided in the sprinkler, and the pressure sensor is used to transmit the detected pressure to the control system.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. Use the positioning component to simultaneously realize the positioning and clamping of the valve, and then cooperate with the correction block to correct the valve angle after positioning, so as to realize the precise positioning and clamping and fixing of the valve; use the positioning component to synchronously drive the top pressure component to seal the valve, and realize the continuous operation of positioning, correction, fixing and sealing through the same component, which improves the detection efficiency and accuracy.

[0026] 2. Use the anti-flying shaft assembly to transmit the impact force of the valve shaft flying out to the unloading spring. The unloading spring converts the impact force by compressing itself to achieve the purpose of absorbing the impact force and prevent the valve shaft from flying out directly to cause personal injury and damage to the device. When the unloading plate slides to the alarm position, the alarm is triggered by the first contact block, and the second piezoelectric ceramic in the alarm is pressurized and generates an electrical signal. After the electrical signal is transmitted to the control system, the control system sends an alarm to the staff, thereby achieving the purpose of preventing the flying shaft.

[0027] 3. Use the adjusting motor to drive the flying shaft protection end to rotate, and then use the flying shaft protection end to drive the valve shaft to rotate, so that the detection device can automatically adjust the opening and closing of the valve plate according to different detection requirements, avoiding manual opening and closing, and improving the detection accuracy and efficiency.

[0028] 4. When the first sealing plate is defective or aged, the leakage ring groove at the bottom of the sealing disk is used to collect the leaking water, and then the buoyancy is used to make the float drive the feeler rod to squeeze the first piezoelectric ceramic. The first piezoelectric ceramic is pressurized and generates an electrical signal. After receiving the electrical signal, the control system stops the detection and sends a maintenance prompt to the staff to avoid detection errors due to problems with the detection device itself and achieve the purpose of self-inspection of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is an overall stereogram of the valve detection device of the present invention;

[0030] Figure 2 A three-dimensional diagram of the detection assembly of the present invention;

[0031] Figure 3 A three-dimensional diagram of the top pressing assembly of the present invention;

[0032] Figure 4 is a three-dimensional diagram of the sealing disk of the present invention;

[0033] Figure 5 For the present invention Figure 4 A partial enlarged view of the middle A area;

[0034] Figure 6 A three-dimensional diagram of a positioning assembly of the present invention;

[0035] Figure 7 A three-dimensional diagram of the anti-flying shaft assembly of the present invention;

[0036] Figure 8 A three-dimensional diagram of the flying shaft protection end of the present invention;

[0037] Fig. 9 For the present invention Figure 8 A partial enlarged view of the middle B area;

[0038] Fig.10 It is a stereogram of the alarm of the present invention.

[0039] In the figure: 1, detection host; 2, water pool; 3, base plate; 4, electric rotating rod; 5, detection component; 51, top pressure component; 52, anti-fly shaft component; 53, positioning component; 511, extrusion block; 512, sealing plate; 513, limit bracket; 514, limit rod; 515, limit cylinder; 516, floating block; 517, touch rod; 518, first piezoelectric ceramic; 519, first elastic film; 5110, leakage ring groove; 5111, transverse groove; 5112, inclined groove; 5121, first sealing plate; 5122, second sealing plate; 531, base block; 532, transmission slide rod; 533, first slide rod; 534, wheel Plate; 535, positioning wheel; 536, first spring; 537, slide rail; 538, first electric telescopic rod; 539, second slide rod; 5310, second spring; 5311, correction block; 521, second electric telescopic rod; 522, adjustment motor; 523, flying axis protection end; 524, alarm; 5231, protective shell; 5232, fitting groove; 5233, force unloading plate; 5234, first contact block; 5235, force unloading spring; 5241, force transmission block; 5242, striker; 5243, reset spring; 5244, second elastic membrane; 5245, second piezoelectric ceramic; 5246, second contact block. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figure 1-Figure 10As shown, the present invention provides a technical solution for a valve detection device: comprising a detection host 1, a water pool 2 is provided on the detection host 1, an electric rotating rod 4 is installed on the detection host 1, a base plate 3 is installed on the electric rotating rod 4, and a detection component 5 is installed on the base plate 3; the detection component 5 comprises a positioning component 53, a top pressure component 51 and an anti-flying shaft component 52, the positioning component 53 is symmetrically and slidably installed on the base plate 3, the anti-flying shaft component 52 is slidably installed on the base plate 3, the anti-flying shaft component 52 is located on one side of the positioning component 53, the top pressure component 51 is installed on the base plate 3, the top pressure component 51 is located between the positioning components 53, and the top pressure component 51 is slidably connected to the positioning components 53 on both sides. A control system is provided in the detection host 1, and the control system is used to control the entire valve detection device.

[0042] The positioning assembly 53 includes a first electric telescopic rod 538 and a slide rail 537. The first electric telescopic rod 538 is installed on the base plate 3, and the slide rail 537 is installed on the base plate 3. A base block 531 is installed on the output shaft of the first electric telescopic rod 538. The base block 531 is slidably connected to the slide rail 537. A transmission slide bar 532 is installed on the base block 531. The transmission slide bar 532 is slidably installed in the transverse groove 5111 and the inclined groove 5112. A first slide bar 533 is slidably installed on the base block 531. A wheel plate 534 is installed at one end of the first slide bar 533. Two groups of positioning wheels 535 are symmetrically and rotatably installed on the wheel plate 534. A first spring 536 is installed between the wheel plate 534 and the base block 531.

[0043] The positioning assembly 53 further includes a second slide bar 539 , which is slidably mounted on the base block 531 , a deviation correction block 5311 is mounted on one end of the second slide bar 539 , and a second spring 5310 is mounted between the second slide bar 539 and the base block 531 .

[0044] The top pressure assembly 51 includes an extrusion block 511 and a limiting bracket 513. A limiting cylinder 515 is symmetrically installed on the extrusion block 511. The limiting bracket 513 is installed on the base plate 3. A limiting rod 514 is installed on the bottom end of the limiting bracket 513. A plurality of protrusions are provided on the limiting rod 514. A plurality of sliding grooves are provided on the limiting cylinder 515. The positions and numbers of the sliding grooves correspond to the protrusions. The shapes of the sliding grooves match the protrusions. The protrusions are slidably connected to the sliding grooves. The limiting rod 514 is slidably connected to the limiting cylinder 515. A sealing disk 512 is installed on the bottom end of the extrusion block 511.

[0045] A leakage annular groove 5110 is provided on the sealing disk 512, a touch rod 517 is slidably installed in the sealing disk 512, a floating block 516 is installed at one end of the touch rod 517, a first elastic film 519 is installed in the sealing disk 512, a first piezoelectric ceramic 518 is installed between the first elastic films 519, the touch rod 517 and the first piezoelectric ceramic 518 are positioned correspondingly, the floating block 516 is located in the leakage annular groove 5110, a first sealing sheet 5121 and a second sealing sheet 5122 are installed at the bottom end of the sealing disk 512, and an electric valve is provided on the sealing disk 512.

[0046] The extrusion block 511 is provided with a transverse groove 5111 and an oblique groove 5112 . The transverse groove 5111 is communicated with the oblique groove 5112 . The extrusion block 511 is slidably connected with the positioning assembly 53 via the transverse groove 5111 and the oblique groove 5112 .

[0047] The anti-flying shaft assembly 52 includes a second electric telescopic rod 521, which is installed on the substrate 3. An adjusting motor 522 is installed on the output shaft of the second electric telescopic rod 521. The adjusting motor 522 is slidably connected to the substrate 3. A flying shaft protection end 523 is installed on the output shaft of the adjusting motor 522, and an alarm 524 is installed in the flying shaft protection end 523.

[0048] The flying shaft protection end 523 includes a protection shell 5231, on which is provided an interlocking groove 5232, the shape of which matches the shape of the valve stem end, a force unloading plate 5233 is slidably installed in the protection shell 5231, on which is provided a first contact block 5234, a force unloading spring 5235 is installed between the force unloading plate 5233 and the protection shell 5231, the protection shell 5231 is installed on the output shaft of the second electric telescopic rod 521, an alarm 524 is installed in the protection shell 5231, and the first contact block 5234 corresponds to the position of the alarm 524.

[0049] The alarm 524 includes a force transmission block 5241 and a striker 5242. The force transmission block 5241 is slidably installed in the protective shell 5231. A return spring 5243 is installed between the force transmission block 5241 and the protective shell 5231. The striker 5242 is installed in the protective shell 5231. A second contact block 5246 is provided on the force transmission block 5241. A second elastic film 5244 is installed in the force transmission block 5241. A second piezoelectric ceramic 5245 is installed between the second elastic film 5244. The striker 5242 and the second piezoelectric ceramic 5245 correspond in position.

[0050] A sprinkler is installed on the substrate 3, a sealing gasket is provided on the surface of the substrate 3, the sprinkler is located at the center of the valve detection position, the sprinkler is connected to a water supply device, and the water supply device is used to deliver detection water to the sprinkler. A pressure sensor is provided in the sprinkler, and the pressure sensor is used to transmit the detected pressure to the control system.

[0051] The working principle of the present invention is as follows: the valve to be inspected is placed on the substrate 3, the control system turns on the first electric telescopic rod 538, the output shaft of the first electric telescopic rod 538 drives the entire positioning assembly 53 to move forward, the two positioning assemblies 53 move forward and approach each other, when the positioning wheel 535 on the positioning assembly 53 hits the side of the valve, the valve is pushed to move together, and under the push of the positioning wheels 535 on both sides, the valve is gradually centered, and the positioning wheels 535 complete the preliminary positioning and clamping of the valve, at which time the valve is aligned with the sealing disk 512.

[0052] After the initial positioning is completed, the output shaft of the first electric telescopic rod 538 is further extended forward. Since the positioning wheel 535 on the wheel plate 534 is against the valve and cannot move, at this time, under the action of pressure, the base block 531 is further extended forward and produces relative displacement with the first sliding rod 533 on the wheel plate 534. The base block 531 applies pressure to the first spring 536, and the first spring 536 is compressed. The first spring 536 transmits the elastic force to the positioning wheel 535 through the wheel plate 534, so that the positioning wheel 535 clamps the valve. It is tightened more and the valve is further centered. Subsequently, the base block 531 drives the correction block 5311 to contact the cylindrical stuffing box on the valve body through the second sliding rod 539. The correction block 5311 pushes the stuffing box, so that the stuffing box drives the valve on the positioning wheel 535 to deflect around the center axis of the valve plate. Under the squeezing of the correction blocks 5311 on both sides, the angle of the stuffing box is gradually corrected, thereby realizing the correction of the valve angle. At this time, the end of the valve stem passing through the stuffing box is aligned with the fitting groove 5232 on the protective shell 5231.

[0053] During the preliminary positioning process of the positioning assembly 53, the transmission slide bar 532 on the positioning assembly 53 slides in the transverse groove 5111. When the positioning assembly 53 is corrected, as the first electric telescopic rod 538 extends forward, the base block 531 drives the transmission slide bar 532 to enter the inclined groove 5112, and the transmission slide bar 532 squeezes the extrusion block 511 through the inclined groove 5112. Since the limiting cylinder 515 on the extrusion block 511 is slidably connected with the limiting rod 514 up and down, the compressed extrusion block 511 slides downward along the limiting rod 514, and the extrusion block 511 drives the sealing plate 512 downward. When the positioning assembly 53 is corrected, as the first electric telescopic rod 538 continues to extend forward, the sealing plate 512 contacts the valve body and presses the valve body tightly. The first sealing sheet 5121 seals the sealing plate 512 with the upper end of the valve body, the sealing gasket on the substrate 3 forms a seal between the valve body and the substrate 3, and the second sealing sheet 5122 presses on the flange of the valve body, thereby completing the sealing before the valve detection.

[0054] After the valve body is sealed, the control system turns on the second electric telescopic rod 521, and the second electric telescopic rod drives the adjusting motor 522 to extend forward, and the adjusting motor 522 drives the flying shaft protection end head 523 to extend forward, so that the fitting groove 5232 on the protection shell 5231 is fitted with the end of the valve shaft. After that, the adjusting motor 522 is started, and the output shaft of the adjusting motor 522 drives the flying shaft protection end head 523 to rotate, and the flying shaft protection end head 523 drives the valve shaft to rotate, and the valve shaft drives the valve plate to rotate and open and close.

[0055] When it is necessary to test the sealing of the valve body, the control system puts the valve plate in a half-open state and closes the electric valve on the sealing disk 512. Water is injected into the valve through a sprinkler to pressurize it, and then a pressure maintenance test is performed. During the pressure maintenance test, the water pressure is tested using the pressure sensor in the sprinkler. When the change in water pressure is within the standard value range, it proves that the sealing of the valve body is qualified. When the change exceeds the standard value, it is unqualified.

[0056] When the sealing of the valve plate is required, the control system opens the electric valve on the sealing disk 512, and fills the valve with water through the sprinkler. The control system closes the valve plate, and a closed detection chamber is formed between the bottom of the valve plate and the substrate 3. The control system opens the electric rotating rod 4, and the electric rotating rod 4 drives the substrate 3 to rotate and tilt, so that excess water above the substrate 3 flows out from the electric valve into the water pool 2. After that, the substrate 3 is reset, and the closed detection chamber is pressurized. After that, a pressure maintenance test is performed. During the pressure maintenance test, the water pressure is tested using the pressure sensor in the sprinkler. When the water pressure change is within the standard value range, it proves that the valve plate sealing is qualified. When the change exceeds the standard value, it is unqualified.

[0057] When there is a quality defect in the valve, when the valve shaft is affected by the water pressure during the inspection process and breaks away from the constraint and flies out, it will slide along the fitting groove 5232 in the protective housing 5231 and hit the unloading plate 5233. The unloading plate 5233 slides in the protective housing 5231 under the impact and transmits the impact force to the unloading spring 5235. The unloading spring 5235 absorbs the impact force and compresses to absorb the impact force, thereby preventing the valve shaft from flying out directly and causing personal injury and mechanical damage. When the unloading plate 5233 slides to the position of the alarm 524, the unloading plate 5233 on it will The first contact block 5234 squeezes the second contact block 5246. After the second contact block 5246 is compressed, it drives the force transmission block 5241 to slide in the protective shell. The displacement of the force transmission block 5241 causes the striker 5242 and the second elastic film 5244 to be squeezed. After the second elastic film 5244 is compressed, it squeezes the second piezoelectric ceramic 5245 inside. According to the piezoelectric effect, the second piezoelectric ceramic 5245 is compressed and generates an electrical signal. After the electrical signal is transmitted to the control system, the control system sends an alarm to the staff, thereby achieving the purpose of preventing the flying shaft.

[0058] When the first sealing sheet 5121 is defective or aged, during the valve body sealing test, high-pressure water will seep out along the gap between the first sealing sheet 5121 and the valve. At this time, the seeped water will flow into the leakage ring groove 5110. As the water accumulates, under the action of buoyancy, the floating block 516 floats up and drives the touch rod 517 to rise. The touch rod 517 rises and squeezes the first elastic film 519. The first elastic film 519 is pressurized and squeezes the first piezoelectric ceramic 518. The first piezoelectric ceramic 518 is pressurized and generates an electrical signal. After receiving the electrical signal, the control system stops the test and sends a maintenance prompt to the staff to avoid detection errors due to problems with the detection device itself.

[0059] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A valve detection device, characterized in that: The valve detection device comprises a detection host (1), the detection host (1) is provided with a water pool (2), the detection host (1) is mounted with an electric rotating rod (4), the electric rotating rod (4) is mounted with a base plate (3), and the base plate (3) is mounted with a detection component (5); the detection component (5) comprises a positioning component (53), a top pressure component (51) and an anti-flying shaft component (52), the positioning component (53) is symmetrically and slidably mounted on the base plate (3), the anti-flying shaft component (52) is slidably mounted on the base plate (3), the anti-flying shaft component (52) is located on one side of the positioning component (53), the top pressure component (51) is mounted on the base plate (3), the top pressure component (51) is located between the positioning components (53), and the top pressure component (51) is slidably connected to the positioning components (53) on both sides; The pressing assembly (51) comprises an extrusion block (511), a sealing disk (512) is installed at the bottom end of the extrusion block (511), a leakage ring groove (5110) is provided on the sealing disk (512), a feeler rod (517) is slidably installed in the sealing disk (512), a floating block (516) is installed at one end of the feeler rod (517), a first elastic film (519) is installed in the sealing disk (512), and a first elastic film (519) is installed between the first elastic films (519). a piezoelectric ceramic (518), the contact rod (517) and the first piezoelectric ceramic (518) are located in a corresponding position, the floating block (516) is located in a leakage ring groove (5110), a first sealing sheet (5121) and a second sealing sheet (5122) are respectively installed at the bottom end of the sealing disk (512), the leakage ring groove (5110) is located between the first sealing sheet (5121) and the second sealing sheet (5122), and an electric valve is provided on the sealing disk (512); The sealing disc (512) contacts the valve body and presses the valve body tightly, the first sealing sheet (5121) seals the sealing disc (512) and the upper end of the valve body, the sealing gasket on the substrate (3) forms a seal between the valve body and the substrate (3), and the second sealing sheet (5122) presses on the flange of the valve body.

2. A valve detection device according to claim 1, characterized in that: The top pressing assembly (51) comprises a limit bracket (513), a limit cylinder (515) is symmetrically mounted on the extrusion block (511), the limit bracket (513) is mounted on the base plate (3), a limit rod (514) is mounted on the bottom end of the limit bracket (513), a plurality of protrusions are arranged on the limit rod (514), a plurality of slide grooves are arranged on the limit cylinder (515), the positions and numbers of the slide grooves correspond to the protrusions, the shapes of the slide grooves match the protrusions, the protrusions are slidably connected to the slide grooves, and the limit rod (514) is slidably connected to the limit cylinder (515).

3. A valve detection device according to claim 1, characterized in that: The extrusion block (511) is provided with a transverse groove (5111) and an oblique groove (5112), the transverse groove (5111) is in communication with the oblique groove (5112), and the extrusion block (511) is slidably connected to the positioning assembly (53) via the transverse groove (5111) and the oblique groove (5112).

4. A valve detection device according to claim 3, characterized in that: The positioning assembly (53) comprises a first electric telescopic rod (538) and a slide rail (537); the first electric telescopic rod (538) is mounted on a base plate (3); the slide rail (537) is mounted on the base plate (3); a base block (531) is mounted on an output shaft of the first electric telescopic rod (538); the base block (531) is slidably connected to the slide rail (537); a transmission slide rod (532) is mounted on the base block (531); the transmission slide rod (532) is slidably mounted in a transverse groove (5111) and an inclined groove (5112); a first slide rod (533) is slidably mounted on the base block (531); a wheel plate (534) is mounted at one end of the first slide rod (533); two groups of positioning wheels (535) are symmetrically and rotatably mounted on the wheel plate (534); a first spring (536) is mounted between the wheel plate (534) and the base block (531).

5. A valve detection device according to claim 4, characterized in that: The positioning assembly (53) further comprises a second sliding rod (539), wherein the second sliding rod (539) is slidably mounted on the base block (531), a deviation correction block (5311) is mounted on one end of the second sliding rod (539), and a second spring (5310) is mounted between the second sliding rod (539) and the base block (531).

6. A valve detection device according to claim 1, characterized in that: The anti-flying shaft assembly (52) comprises a second electric telescopic rod (521), the second electric telescopic rod (521) being mounted on a base plate (3), an adjusting motor (522) being mounted on an output shaft of the second electric telescopic rod (521), the adjusting motor (522) being slidably connected to the base plate (3), a flying shaft protection end head (523) being mounted on the output shaft of the adjusting motor (522), and an alarm (524) being mounted inside the flying shaft protection end head (523).

7. A valve detection device according to claim 6, characterized in that: The flying shaft protection end (523) comprises a protection shell (5231), the protection shell (5231) is provided with an engaging groove (5232), the shape of the engaging groove (5232) matches the shape of the valve stem end, a force unloading plate (5233) is slidably installed in the protection shell (5231), a first contact block (5234) is provided on the force unloading plate (5233), a force unloading spring (5235) is installed between the force unloading plate (5233) and the protection shell (5231), the protection shell (5231) is installed on the output shaft of the second electric telescopic rod (521), an alarm (524) is installed in the protection shell (5231), and the first contact block (5234) corresponds to the position of the alarm (524).

8. A valve detection device according to claim 7, characterized in that: The alarm (524) comprises a force transmission block (5241) and a striker (5242); the force transmission block (5241) is slidably mounted in a protective shell (5231); a return spring (5243) is mounted between the force transmission block (5241) and the protective shell (5231); the striker (5242) is mounted in the protective shell (5231); a second contact block (5246) is provided on the force transmission block (5241); a second elastic film (5244) is mounted in the force transmission block (5241); a second piezoelectric ceramic (5245) is mounted between the second elastic films (5244); and the striker (5242) and the second piezoelectric ceramic (5245) correspond in position.

9. A valve detection device according to claim 1, characterized in that: A sprinkler is mounted on the substrate (3), a sealing pad is provided on the surface of the substrate (3), the sprinkler is located at the center of the valve detection position, the sprinkler is connected to a water supply device, and the water supply device is used to deliver detection water to the sprinkler.

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