A kind of pipeline valve safety detection equipment

Abstract

The invention discloses a pipeline valve safety detection device, which belongs to the field of valve testing technology. A protective cover is slidably arranged above a detection platform, a ladder-shaped groove is provided in the middle of the detection platform, a ladder-shaped slide plate is slidably arranged on the ladder-shaped groove, a rotating cylinder is rotatably arranged inside a fixed block, a driving gear is fixedly arranged on the outside of the rotating cylinder, a reciprocating tooth plate is fixedly arranged at the bottom of the ladder-shaped slide plate, the reciprocating tooth plate is slidably arranged in an engagement groove and meshes with the driving gear below; a butterfly valve to be detected is arranged in a clamping structure, and pressurized pipelines cooperating with the butterfly valve are also arranged on both sides of the ladder-shaped groove; a vertical rail is arranged on one side of the protective cover, and a plug plate is movably arranged on the vertical rail. The present invention can drive the ladder-shaped slide plate to reciprocate along the ladder-shaped groove through a screw and a rotating cylinder, so as to detect the pipelines on both sides of the valve in turn. When the ladder-shaped slide plate triggers an excitation button, a pump will inject gas into the valve through a pressurized pipeline. The structure is stable and effective and reduces time and labor costs.

Description

Technical Field

[0001] The invention relates to the technical field of valve testing, in particular to a safety detection device for valves in a delivery pipeline. Background Art

[0002] Valves are pipe accessories used to open and close pipelines, control flow direction, and adjust and control the parameters of the conveying medium. They are control components in fluid conveying systems and have functions such as cutoff, adjustment, diversion, backflow prevention, pressure stabilization, diversion or overflow pressure relief. They can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. During the use of actual pipeline valves, due to the increase in pressure, the valve will cause a certain deformation, and then the valve will leak. Therefore, in the factory inspection of the valve, it is necessary to test the pressure resistance and sealing performance of the valve to improve the product's qualification rate and service life.

[0003] The patent application with publication number CN117968960A discloses a water valve leakage detection device, which belongs to the technical field of valve leakage detection equipment, including a valve, an input pipe, an output pipe, a regulating mechanism and a detection mechanism, wherein the input pipe and the output pipe are fixedly installed at both ends of the valve, respectively, the regulating mechanism includes a first slider and a regulating assembly, the detection mechanism includes a first rotating rod, a recording assembly and a switch assembly, the first slider is connected to the input pipe through the regulating assembly, the regulating assembly is connected to the input pipe, the recording assembly is connected to the first rotating rod, the output pipe is connected to the recording assembly, the recording assembly is connected to the switch assembly, and the switch assembly is connected to the regulating assembly; the regulating assembly includes a first support rod, a first sliding platform is fixedly installed on the upper side of the first support rod, and a first slider is slidably installed on the upper side of the first sliding platform. The invention realizes automatic recording of leakage, and automatically separates the input end when the alarm value is exceeded, thereby avoiding overflow of high-pressure water.

[0004] The test efficiency of the valve detection device disclosed above is low, and it cannot detect both sides of the valve in turn. In addition, the degree of automation is low, time-consuming and labor-intensive, and it cannot automatically switch the pipelines to be detected on both sides of the valve. Therefore, in view of the above situation, it is urgent to develop a pipeline valve safety detection device to overcome the shortcomings in current practical applications. Summary of the invention

[0005] The purpose of the present invention is to provide a pipeline valve safety detection device to solve the problems of low test efficiency of existing valve detection devices, inability to detect both sides of the valve in turn, low degree of automation, time-consuming and labor-intensive, and inability to automatically switch the pipelines to be detected on both sides of the valve.

[0006] To achieve the above-mentioned purpose, the technical scheme of the present invention is: a pipeline valve safety detection device, comprising a detection platform and a protective cover, the protective cover is slidably arranged above the detection platform; a ladder-shaped groove is provided in the middle of the detection platform, a ladder-shaped slide plate is slidably arranged on the ladder-shaped groove, a through meshing groove is provided on the side of the ladder-shaped groove, a fixed block is fixedly provided at the bottom of the detection platform, a rotating cylinder is rotatably arranged inside the fixed block, a driving gear is fixedly provided on the outer side of the rotating cylinder, a reciprocating tooth plate is fixedly provided at the bottom of the ladder-shaped slide plate, the reciprocating tooth plate is slidably arranged in the meshing groove and meshes with the driving gear below; a clamping structure is provided on the top of the ladder-shaped slide plate, a butterfly valve to be detected is provided in the clamping structure, and pressurized pipes cooperating with the butterfly valve are also provided on both sides of the ladder-shaped groove; a vertical rail is provided on one side of the protective cover, and a plug plate is movably provided on the vertical rail.

[0007] As a further solution of the present invention: a slide is fixedly provided on the side of the fixed block, a slide seat is slidably provided on the slide, a screw is provided on the internal thread of the rotating cylinder, and the outer side of the screw is connected to the slide seat.

[0008] As a further solution of the present invention: a boss is arranged on the side of the detection platform, a reciprocating motor is installed at the bottom of the boss, a first driving arm is installed at the output end of the reciprocating motor, a second driving arm is installed at the end of the first driving arm, and the other end of the second driving arm is movably connected to the slide.

[0009] As a further solution of the present invention: the clamping structure includes a lower clamping hoop symmetrically fixed on the ladder-shaped slide plate, and an upper clamping hoop is movably arranged on the top of the lower clamping hoop; one side of the upper clamping hoop is movably connected to the lower clamping hoop by a hinge; a lower locking platform is arranged on the other side of the lower clamping hoop, and an upper locking platform cooperating therewith is arranged on the side of the upper clamping hoop, and a first sliding groove is opened on the outer walls of the lower locking platform and the upper locking platform, and a locking hoop is slidably arranged on the first sliding groove.

[0010] As a further solution of the present invention: a female seat is further arranged between the lower clamps, and a second sliding groove cooperating with the locking clamps on both sides is opened on the female seat.

[0011] As a further solution of the present invention: a pump is arranged at the bottom of the pressurized pipe, a limiting cavity cooperating with the butterfly valve is arranged at the outlet end of the pressurized pipe, and a plurality of groups of magnetic plates are arranged on the inner wall of the limiting cavity.

[0012] As a further solution of the present invention: a pneumatic element is also provided on the inner wall of the pressurized pipe.

[0013] As a further solution of the present invention: a symmetrical slide rail is arranged on the top of the detection platform, a slide rail cooperating with the slide rail is arranged on the bottom of the protection cover, and a handle is also arranged on the side of the protection cover.

[0014] As a further solution of the present invention: an observation window is arranged on the top of the protective cover, and a control panel is also arranged on one side of the detection platform.

[0015] As a further solution of the present invention: activation buttons cooperating with the trapezoidal slide are arranged on the inner walls on both sides of the trapezoidal groove.

[0016] The present invention provides a pipeline valve safety detection device through improvement. Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention can drive the drive gear to intermittently reciprocate through the cooperation of the screw and the rotating drum. Since the drive gear is meshed with the reciprocating gear plate, the ladder-shaped slide and the clamping structure will reciprocate along the ladder-shaped groove, thereby realizing the detection of the pipelines on both sides of the valve in turn. When the ladder-shaped slide triggers the excitation button, one side of the valve will be fixed to the limit cavity of the pressurized pipeline, and the pump will inject gas into the valve through the pressurized pipeline. At this time, the pneumatic element can detect the air pressure changes in the pressurized pipeline, thereby further detecting the sealing performance of the valve. The structure is stable and effective and brings unexpected technical effects, and also reduces the time cost and labor cost of the pipeline valve safety detection equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 It is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 It is the three-dimensional structure of the detection platform in the present invention Figure 1 ;

[0021] Figure 3 It is a three-dimensional structural diagram of the ladder-shaped slide plate in the present invention;

[0022] Figure 4 yes Figure 3 A magnified view of the structure at center A;

[0023] Figure 5 It is the three-dimensional structure of the detection platform in the present invention Figure 2 ;

[0024] Figure 6 It is a local explosion matching diagram in the present invention;

[0025] Figure 7 It is a three-dimensional structural diagram of the protective cover in the present invention;

[0026] Figure 8 It is a three-dimensional structural diagram of the test pipeline in the present invention;

[0027] Fig. 9 It is the three-dimensional structure of the detection platform in the present invention Figure 3 .

[0028] Description of reference numerals:

[0029] 1. Testing table; 101. Ladder groove; 102. Engaging groove; 103. Fixed block; 104. Rotating drum; 105. Slide; 106. Driving gear; 107. Screw; 108. Slide seat; 109. Boss; 110. Reciprocating motor; 111. First driving arm; 112. Second driving arm; 113. Ladder slide; 114. Reciprocating tooth plate; 115. Clamping structure; 116. Lower clamp; 117. Upper clamp; 118. Hinge; 119. Lower lock Fixed platform; 120, upper locking platform; 121, first sliding groove; 122, locking hoop; 123, mother seat; 124, second sliding groove; 125, pressurized pipeline; 126, limit cavity; 127, magnetic plate; 128, pneumatic element; 129, pump; 130, control panel; 131, slide rail; 132, butterfly valve; 133, excitation button; 2, protective cover; 201, observation window; 202, handle; 203, slideway; 204, vertical rail; 205, plug plate. DETAILED DESCRIPTION

[0030] The following will be combined with the attached Figures 1 to 9 The technical solution of the present invention is described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.

[0031] The present invention provides a pipeline valve safety detection device through improvement. Figure 1-Figure 9As shown, the testing platform 1 includes a testing platform 1 and a protective cover 2, the protective cover 2 is slidably arranged above the testing platform 1; a ladder-shaped groove 101 is provided in the middle of the testing platform 1, a ladder-shaped slide plate 113 is slidably arranged on the ladder-shaped groove 101, a through meshing groove 102 is provided on the side of the ladder-shaped groove 101, a fixed block 103 is fixedly arranged at the bottom of the testing platform 1, a rotating drum 104 is rotatably arranged inside the fixed block 103, a driving gear 106 is fixedly arranged on the outer side of the rotating drum 104, and the ladder-shaped slide plate 101 is provided with a plurality of gears. A reciprocating toothed plate 114 is fixedly provided at the bottom of 13, and the reciprocating toothed plate 114 is slidably provided in the meshing groove 102 and meshes with the driving gear 106 below; a clamping structure 115 is provided on the top of the ladder-shaped slide plate 113, and a butterfly valve 132 to be detected is provided in the clamping structure 115, and pressurized pipes 125 cooperating with the butterfly valve 132 are also provided on both sides of the ladder-shaped groove 101; a vertical rail 204 is provided on one side of the protective cover 2, and a plug plate 205 is movably provided on the vertical rail 204.

[0032] In this embodiment: the pipeline valve safety detection device is mainly divided into two parts: the detection platform 1 and the protective cover 2. When the device is working, first pull the plug plate 205 upward along the vertical rail 204, and then pull the protective cover 2 to one side along the detection platform 1 through the handle 202. When the ladder slide 113 leaks out of the protective cover 2, first install the butterfly valve 132 to be detected on the lower clamp 116. Then turn the upper clamp 117 over and align the lower locking platform 119 and the upper locking platform 120, and finally slide the locking hoop 122 on the mother seat 123 outward and lock the first sliding groove 121 on the outer wall of the lower locking platform 119 and the upper locking platform 120. Then restore the protective cover 2 to its original position through the handle 202, and restore the plug plate 205 to its original state to seal the protective cover 2. Then, the reciprocating motor 110 is started. When the reciprocating motor 110 drives the screw rod 107 and the slide 108 to move outward through the first driving arm 111 and the second driving arm 112, the driving gear 106 rotates clockwise. Driven by the reciprocating toothed plate 114, when the driving gear 106 rotates clockwise, the ladder slide 113 and the clamping structure 115 at the top move to the right. When the ladder slide 113 moves to the rightmost side, the right end of the butterfly valve 132 falls into the limit cavity 126, and the ladder slide 113 presses the excitation button 133 on the right side. At this time, the pressurized pipe 125 and the pneumatic element 128 on the right side detect the right side of the butterfly valve 132.

[0033] When the screw rod 107 and the slide seat 108 move inward along the slide 105, the driving gear 106 rotates counterclockwise. Driven by the reciprocating tooth plate 114, when the driving gear 106 rotates counterclockwise, the ladder slide 113 and the clamping structure 115 at the top move to the left. When the ladder slide 113 moves to the leftmost side, the left end of the butterfly valve 132 will fall into the limit cavity 126, and the ladder slide 113 will press the excitation button 133 on the left side. At this time, the pressurized pipe 125 and the pneumatic element 128 on the left side detect the left side of the butterfly valve 132. When working, the pump 129 pressurizes the inside of the butterfly valve 132 through the pressurized pipe 125. When the pressure reaches the preset value, the pump 129 is closed. At this time, if the pneumatic element 128 detects that the air pressure drops, it means that there is a gap or crack at this end of the valve. If the air pressure element 128 detects that there is no drop in air pressure, it means that the sealing performance of the end is good.

[0034] See attached Figure 1 and attached Figure 5 -Attached Figure 6 A slide 105 is fixedly provided on the side of the fixed block 103, a slide seat 108 is slidably provided on the slide 105, a screw 107 is provided on the internal thread of the rotating cylinder 104, and the outer side of the screw 107 is connected to the slide seat 108; a boss 109 is provided on the side of the detection platform 1, a reciprocating motor 110 is installed at the bottom of the boss 109, a first driving arm 111 is installed at the output end of the reciprocating motor 110, a second driving arm 112 is installed at the end of the first driving arm 111, and the other end of the second driving arm 112 is movably connected to the slide seat 108.

[0035] In this embodiment, in order to drive the rotating drum 104 to rotate intermittently clockwise and counterclockwise, a screw rod 107 structure is designed. When the reciprocating motor 110 drives the screw rod 107 and the slide seat 108 to reciprocate along the slide 105, the rotating drum 104 will drive the driving gear 106 to rotate intermittently under the meshing of the threads. When the driving gear 106 rotates clockwise, the ladder-shaped slide plate 113 and the clamping structure 115 on the top move to the right, and the pressurized pipe 125 and the pneumatic element 128 on the right side detect the right side of the butterfly valve 132. When the driving gear 106 rotates counterclockwise, the ladder-shaped slide plate 113 and the clamping structure 115 on the top move to the left, and the pressurized pipe 125 and the pneumatic element 128 on the left side detect the left side of the butterfly valve 132.

[0036] See attached Figure 2 -Attached Figure 4The clamping structure 115 includes a lower clamping hoop 116 fixedly arranged on the ladder-shaped slide plate 113, and an upper clamping hoop 117 is movably arranged on the top of the lower clamping hoop 116; one side of the upper clamping hoop 117 is movably connected with the lower clamping hoop 116 through a hinge 118; a lower locking platform 119 is arranged on the other side of the lower clamping hoop 116, and an upper locking platform 120 cooperating therewith is arranged on the side of the upper clamping hoop 117, and a first sliding groove 121 is opened on the outer walls of the lower locking platform 119 and the upper locking platform 120, and a locking hoop 122 is slidably arranged on the first sliding groove 121.

[0037] In this embodiment, in order to improve the test efficiency and quickly lock and install the butterfly valve 132 to be tested, a clamping structure 115 is provided on the ladder-shaped slide plate 113. When the butterfly valve 132 needs to be fixed, it is first placed on the lower clamp 116 at the bottom, and then the upper clamp 117 is turned over and the lower locking platform 119 and the upper locking platform 120 are aligned. Finally, the locking hoop 122 on the mother seat 123 is slid outward and the first sliding groove 121 on the outer wall of the lower locking platform 119 and the upper locking platform 120 is locked.

[0038] See attached Figure 3 -Attached Figure 4 A female seat 123 is also provided between the lower clamping hoop 116 , and a second sliding groove 124 cooperating with the locking hoops 122 on both sides is opened on the female seat 123 .

[0039] In this embodiment, when the butterfly valve 132 is detected, it needs to be unlocked. In order to facilitate the storage of the lock hoop 122, a female seat 123 is designed. At this time, the lock hoop 122 on both sides moves inward along the lower locking platform 119 and the upper locking platform 120, and is placed on the female seat 123 through the second sliding groove 124.

[0040] See attached Figure 8 -Attached Fig. 9 A pump 129 is provided at the bottom of the pressurized pipe 125 , and a limiting cavity 126 cooperating with the butterfly valve 132 is provided at the outlet end of the pressurized pipe 125 , and multiple groups of magnetic plates 127 are provided on the inner wall of the limiting cavity 126 .

[0041] In this embodiment, convex rings cooperating with the delivery pipe are arranged at both ends of the butterfly valve 132. In the process of detection, in order to further improve the sealing performance between the pressurized pipe 125 and the butterfly valve 132, a limit cavity 126 is designed. When the butterfly valve 132 reciprocates, a magnetic plate 127 is arranged on the inner wall of the limit cavity 126 in order to automatically position and fix it.

[0042] See attached Figure 8 -Attached Fig. 9 A gas pressure element 128 is also provided on the inner wall of the pressurized pipe 125 .

[0043] In this embodiment, in order to monitor the pressure changes in the pressurized pipe 125 and the butterfly valve 132 in real time, a pneumatic element 128 is designed. When working, the pump 129 pressurizes the inside of the butterfly valve 132 through the pressurized pipe 125. When the pressure reaches a preset value, the pump 129 is turned off. At this time, if the pneumatic element 128 detects that the air pressure has dropped, it means that there is a gap or crack at the end of the valve. If the pneumatic element 128 detects that the air pressure has not dropped, it means that the sealing performance of the end is good.

[0044] See attached Figure 2 and attached Figure 7 A symmetrical slide rail 131 is arranged on the top of the testing platform 1 , a slideway 203 cooperating therewith is provided at the bottom of the protective cover 2 , and a handle 202 is also arranged on the side of the protective cover 2 .

[0045] In this embodiment, in order to prevent the external airflow from interfering with the test result, a protective cover 2 is slidably provided above the test platform 1. In order to facilitate the movement of the protective cover 2 and thus facilitate the disassembly and assembly of the butterfly valve 132, a handle 202 is designed.

[0046] See attached Figure 1 An observation window 201 is provided on the top of the protective cover 2 , and a control panel 130 is also provided on one side of the testing platform 1 .

[0047] In this embodiment, in order to facilitate observation of the detection status of the butterfly valve 132 in the protective cover 2, an observation window 201 is designed. In order to control the overall operation of the device, a control panel 130 is designed.

[0048] See attached Fig. 9 , activation buttons 133 cooperating with the trapezoidal slide plate 113 are arranged on the inner walls on both sides of the trapezoidal groove 101 .

[0049] In this embodiment: when the ladder-shaped slide plate 113 and the butterfly valve 132 on its top move to the side along the ladder-shaped groove 101, one side of the butterfly valve 132 is just fixed to the pressurized pipe 125. In order to automatically start the pump 129, an excitation button 133 is designed.

[0050] Working principle of the present invention: When the device is working, first pull the plug plate 205 upward along the vertical rail 204, and then pull the protective cover 2 to one side along the detection platform 1 through the handle 202. When the ladder-shaped slide plate 113 leaks out of the protective cover 2, first install the butterfly valve 132 to be tested on the lower clamp 116. Then turn the upper clamp 117 over and align the lower locking platform 119 and the upper locking platform 120, and finally slide the locking hoop 122 on the mother seat 123 outward and lock the first sliding groove 121 on the outer wall of the lower locking platform 119 and the upper locking platform 120. Then restore the protective cover 2 to its original position through the handle 202, and restore the plug plate 205 to its original state to seal the protective cover 2. Then, the reciprocating motor 110 is started. When the reciprocating motor 110 drives the screw rod 107 and the slide 108 to move outward through the first driving arm 111 and the second driving arm 112, the driving gear 106 rotates clockwise. Driven by the reciprocating toothed plate 114, when the driving gear 106 rotates clockwise, the ladder slide 113 and the clamping structure 115 at the top move to the right. When the ladder slide 113 moves to the rightmost side, the right end of the butterfly valve 132 falls into the limit cavity 126, and the ladder slide 113 presses the excitation button 133 on the right side. At this time, the pressurized pipe 125 and the pneumatic element 128 on the right side detect the right side of the butterfly valve 132.

[0051] When the screw rod 107 and the slide seat 108 move inward along the slide 105, the driving gear 106 rotates counterclockwise. Driven by the reciprocating tooth plate 114, when the driving gear 106 rotates counterclockwise, the ladder slide 113 and the clamping structure 115 at the top move to the left. When the ladder slide 113 moves to the leftmost side, the left end of the butterfly valve 132 will fall into the limit cavity 126, and the ladder slide 113 will press the excitation button 133 on the left side. At this time, the pressurized pipe 125 and the pneumatic element 128 on the left side detect the left side of the butterfly valve 132. When working, the pump 129 pressurizes the inside of the butterfly valve 132 through the pressurized pipe 125. When the pressure reaches the preset value, the pump 129 is closed. At this time, if the pneumatic element 128 detects that the air pressure drops, it means that there is a gap or crack at this end of the valve. If the air pressure element 128 detects that there is no drop in air pressure, it means that the sealing performance of the end is good.

[0052] The present invention can drive the driving gear 106 to intermittently reciprocate through the cooperation of the screw 107 and the rotating drum 104. Since the driving gear 106 is meshed with the reciprocating tooth plate 114, the ladder-shaped slide 113 and the clamping structure 115 will reciprocate along the ladder-shaped groove 101, thereby realizing the detection of the pipelines on both sides of the valve in turn. When the ladder-shaped slide 113 triggers the excitation button 133, one side of the valve will be fixed to the limit cavity 126 of the pressurized pipeline 125, and the pump 129 will inject gas into the valve through the pressurized pipeline 125. At this time, the pneumatic element 128 can detect the air pressure change in the pressurized pipeline 125, so as to further detect the sealing performance of the valve. The structure is stable and effective and brings unexpected technical effects, and also reduces the time cost and labor cost of the pipeline valve safety detection equipment.

[0053] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and inventive features disclosed herein.

Claims

1. A pipeline valve safety detection device, comprising a detection platform (1) and a protective cover (2), characterized in that: The protective cover (2) is slidably arranged above the detection platform (1); A trapezoidal groove (101) is provided in the middle of the detection platform (1), a trapezoidal slide plate (113) is slidably provided on the trapezoidal groove (101), a through meshing groove (102) is provided on the side of the trapezoidal groove (101), a fixed block (103) is fixedly provided at the bottom of the detection platform (1), a rotating drum (104) is rotatably provided inside the fixed block (103), a driving gear (106) is fixedly provided on the outside of the rotating drum (104), a reciprocating tooth plate (114) is fixedly provided at the bottom of the trapezoidal slide plate (113), the reciprocating tooth plate (114) is slidably provided in the meshing groove (102) and meshes with the driving gear (106) below; A clamping structure (115) is arranged on the top of the ladder-shaped slide plate (113), a butterfly valve (132) to be detected is arranged in the clamping structure (115), and pressurized pipes (125) cooperating with the butterfly valve (132) are also arranged on both sides of the ladder-shaped groove (101); a vertical rail (204) is arranged on one side of the protective cover (2), and a plug plate (205) is movably arranged on the vertical rail (204); a slide table (105) is fixedly arranged on the side of the fixed block (103), and a slide seat (108) is slidably arranged on the slide table (105) ), the internal thread of the rotating drum (104) is provided with a screw rod (107), the outer side of the screw rod (107) is connected to the sliding seat (108); a boss (109) is provided on the side of the detection platform (1), a reciprocating motor (110) is installed at the bottom of the boss (109), a first driving arm (111) is installed at the output end of the reciprocating motor (110), a second driving arm (112) is installed at the end of the first driving arm (111), and the other end of the second driving arm (112) is movably connected to the sliding seat (108).

2. A pipeline valve safety detection device according to claim 1, characterized in that: The clamping structure (115) comprises a lower clamping hoop (116) fixedly arranged on the ladder-shaped slide plate (113), and an upper clamping hoop (117) is movably arranged on the top of the lower clamping hoop (116); one side of the upper clamping hoop (117) is movably connected to the lower clamping hoop (116) through a hinge (118); a lower locking platform (119) is arranged on the other side of the lower clamping hoop (116), and an upper locking platform (120) cooperating therewith is arranged on the side of the upper clamping hoop (117), and a first sliding groove (121) is opened on the outer walls of the lower locking platform (119) and the upper locking platform (120), and a locking hoop (122) is slidably arranged on the first sliding groove (121).

3. A pipeline valve safety detection device according to claim 2, characterized in that: A female seat (123) is also provided between the lower clamping hoops (116), and a second sliding groove (124) cooperating with the locking hoops (122) on both sides is provided on the female seat (123).

4. A pipeline valve safety detection device according to claim 1, characterized in that: A pump (129) is provided at the bottom of the pressurized pipe (125), a limiting cavity (126) cooperating with the butterfly valve (132) is provided at the outlet end of the pressurized pipe (125), and a plurality of groups of magnetic plates (127) are provided on the inner wall of the limiting cavity (126).

5. A pipeline valve safety detection device according to claim 4, characterized in that: A gas pressure element (128) is also provided on the inner wall of the pressurized pipe (125).

6. A pipeline valve safety detection device according to claim 1, characterized in that: The top of the detection platform (1) is provided with a symmetrical slide rail (131), the bottom of the protection cover (2) is provided with a slideway (203) matching the slide rail, and the side of the protection cover (2) is also provided with a handle (202).

7. A pipeline valve safety detection device according to claim 1, characterized in that: An observation window (201) is provided on the top of the protective cover (2), and a control panel (130) is also provided on one side of the detection platform (1).

8. The pipeline valve safety detection device according to claim 1 is characterized by: On the inner walls on both sides of the trapezoidal groove (101) are arranged activation buttons (133) that cooperate with the trapezoidal slide plate (113).

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