Detection equipment for rotary joint

Abstract

The utility model relates to the technical field of detection equipment, in particular to rotary joint detection equipment, which comprises a mold temperature controller, a driving system and a rack, a plurality of detection stations are arranged on the rack along the length direction of the rack, and each detection station is provided with a simulation rotating shaft parallel to the width direction of the rack. The two ends of the simulation rotating shafts are rotationally connected with the rotating joints correspondingly, the multiple detection stations are arranged, each detection station is provided with the simulation rotating shaft, two rotating joints can be connected at the same time, the simulation rotating shafts are driven by the driving motor to rotate, an actual application scene is provided for the rotating joints, and meanwhile hot water is supplied through the arranged mold temperature controller; the rotary joints are detected by simulating a real scene, automatic detection of the rotary joints and simultaneous detection of a plurality of rotary joints are realized, the detection efficiency of the rotary joints can be greatly improved, and the detection environment is closer to the actual use environment of the rotary joints.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a detection equipment for a rotary joint. Background Art

[0002] A rotary joint refers to a pipeline connection device. It is a closed rotary connector that can rotate 360° to transport the medium. It is used to input the fluid medium from a static pipeline to a dynamic rotating part. Since the rotary joints used in the equipment are mostly required to have high pressure, high speed and sealing application requirements, it is necessary to simulate the actual use conditions to test the various performances of the rotary joints during the production process, mainly to test the sealing effect of the rotary joint. The current detection structure of the rotary joint includes a water tank, a water pump and a rotatable main shaft. The main shaft is to simulate the equipment that needs to be connected in actual use. First, connect the rotary joint to the main shaft, and then connect the other end of the rotary joint to the water tank through a water pipe. Press the water pump to allow water to enter the rotary joint with a certain pressure to simulate the actual application scenario and detect whether the rotary joint is qualified. The detection efficiency of such a detection structure is very low, and it is impossible to detect multiple rotary joints at the same time, and the simulation environment does not fit the actual application environment of the rotary joint. Utility Model Content

[0003] The utility model provides a rotary joint detection device to achieve synchronous detection of multiple rotary joints, improve rotary joint detection efficiency, and make the detection more suitable for actual use environment.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a detection device for a rotary joint, comprising a mold temperature controller, a drive system and a frame, wherein the frame is arranged along its length direction and has a plurality of detection stations, each of the detection stations is provided with a simulated rotating shaft parallel to the width direction of the frame, and the two ends of the simulated rotating shaft are rotatably connected with rotary joints, the mold temperature controller comprises a first main pipe and a second main pipe, the first main pipe is provided with a first opening for connecting the rotary joint, the second main pipe is commonly connected with two symmetrically arranged branch pipes, both of the branch pipes are provided with a second opening, and the second opening is provided with a three-way pipe for connecting the rotary joint, the drive system comprises a drive motor, and a plurality of transmission shafts and clutches corresponding to the detection stations, the drive motor is transmission-connected to each of the transmission shafts, the clutch comprises a turntable detachably connected to the transmission shaft, and the transmission shaft is transmission-connected to the simulated rotating shaft via the turntable.

[0005] Furthermore, the transmission shaft is correspondingly arranged below each simulated rotating shaft, and the simulated rotating shaft and the transmission shaft are both rotatably connected to the frame through bearings.

[0006] Furthermore, a plurality of the transmission shafts are each provided with a transmission disk, two adjacent transmission shafts are connected via a transmission belt, and the transmission shaft close to the driving motor is connected to the driving motor via a transmission belt.

[0007] Furthermore, a groove is provided on the inner side of the turntable, a positioning block corresponding to the groove is provided on the outer side of the transmission shaft, and the clutch also includes a gear lever fixedly connected to the turntable.

[0008] Furthermore, the first main pipe is provided with two first openings corresponding to one of the detection stations.

[0009] Furthermore, the first opening is provided with a first stop valve, the three-way pipe includes three pipe openings, one of the pipe openings is used to connect the rotary joint, and the other two pipe openings are provided with second stop valves.

[0010] Furthermore, a third stop valve is arranged at one end of the first main pipe close to the mold temperature controller, and a fourth stop valve is arranged at one end of the two branch pipes close to the second main pipe.

[0011] Furthermore, the first opening is provided with a first flow sensor, and the three-way pipe is provided with a second flow sensor.

[0012] Compared with the prior art, the beneficial effect of the utility model is as follows: by setting up multiple inspection stations, each inspection station is provided with a simulated shaft that can be connected to two rotary joints at the same time, the simulated shaft is driven to rotate by a driving motor, providing a practical application scenario for the rotary joint, and at the same time, hot water is supplied by using the set mold temperature controller, and the first main pipe is used to supply hot water from the rotary joint on one side of the simulated shaft, and then output from the rotary joint on the other side of the simulated shaft, so that the rotary joint is inspected by simulating the real scene, and one inspection station can realize synchronous inspection of two rotary joints, realize automatic inspection of rotary joints, and simultaneous inspection of multiple rotary joints, thereby greatly improving the inspection efficiency of rotary joints and being closer to the actual use environment of rotary joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 It is a connection diagram of the first main pipe, the second main pipe and the rotary joint in the utility model.

[0015] Figure 3 It is a connection diagram of a single detection station in the utility model.

[0016] Figure 4 It is a schematic diagram of the disassembly of the three-way pipe in the utility model.

[0017] Figure 5It is a schematic diagram of the splitting of the clutch and the transmission shaft in the utility model.

[0018] In the figure: mold temperature controller 1, frame 2, simulated shaft 3, rotary joint 4, first main pipe 5, second main pipe 6, three-way pipe 7, branch pipe 60, drive motor 80, transmission shaft 81, clutch 82, turntable 83, gear lever 84, first stop valve 101, second stop valve 102, third stop valve 103, fourth stop valve 104, first flow sensor 201, second flow sensor 202, pipe mouth a 701, pipe mouth b 702, pipe mouth c 703, positioning block 811, groove 830. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] As shown in the accompanying drawings, the utility model is a rotary joint detection device, including a mold temperature controller 1, a drive system and a frame 2, wherein the frame 2 is provided with a plurality of detection stations arranged along its length direction, and at least two detection stations are provided, such as Figure 1As shown, there are 5 inspection stations in total, each of which is provided with a simulated shaft 3 parallel to the width direction of the frame 2, and both ends of the simulated shaft 3 are rotatably connected with a rotary joint 4, and the rotary joint 4 is the inspection object. The simulated shaft 3 is rotatably connected to the rotary joint 4, and the connection structure simulates the actual working condition of the rotary joint 4. The specific structure is not described in detail. The two rotary joints 4 are connected with a three-way pipe 7, and the mold temperature machine 1 includes a first main pipe 5 and a second main pipe 6. The first main pipe 5 is provided with a first opening for connecting the rotary joint 4, and the second main pipe 6 is commonly connected with two symmetrically arranged branch pipes 60. The two branch pipes 60 are provided with a second opening, and the second opening is provided with a three-way pipe 7 for connecting the rotary joint 4. The mold temperature machine 1 belongs to the existing structure and has a heating function. It can heat water and supply it to the first main pipe 5, and then the first main pipe 5 supplies each rotary joint 4. The driving system includes a driving motor 80, and a plurality of transmission shafts 81 and a clutch 82 corresponding to the inspection station. The driving motor 80 also adopts an existing motor. The driving motor 80 and each transmission shaft 81 is connected in series, and the three-way pipe 7 is provided with three mutually connected pipe openings, which belongs to the existing structure. The driving motor 80 is connected to each of the transmission shafts 81 in a transmission manner, and the clutch 82 includes a turntable 83 that can be detachably connected to the transmission shaft 81. The transmission shaft 81 is connected to the simulation shaft 3 through the turntable 83. The device can detect the sealing performance of the rotary joint 4, the access effect with the interface, the pressure resistance state, etc., that is, simulate the actual use scenario to detect the sealing effect of the rotary joint 4, and heat the water through the mold temperature machine 1. In a relatively closed environment, the heating After that, a certain pressure is generated. The principle of water generating pressure in a sealed environment is a common principle knowledge available now and will not be described in detail. Hot water flows through each rotary joint 4 through the connecting pipe, so that the water seepage of the rotary joint 4 can be checked. The pressure resistance state is to check whether there is splashing when water flows through the rotary joint 4, and the access effect of the interface will also affect the sealing. In addition to checking the actual installation status of the rotary joint 4, the simulated shaft 3 can also be used to run-in the rotary joint 4 to make the rotary joint 4 more suitable for installation.

[0021] Working principle: the simulated rotating shaft 3 on each inspection station is driven by the corresponding transmission shaft 81, and the transmission shaft 81 is powered by the driving motor 80 to keep the simulated rotating shaft 3 and the rotary joint 4 in relative rotation. In this state simulating the actual working condition, the mold temperature controller 1 is used for heating, and the heated hot water containing pressure is supplied to the rotary joint 4, so as to detect the sealing and pressure resistance stability under the simulated state; it should be understood that since the connection between the rotary joint 4 and the access device is a "hard seal", it cannot be completely sealed. Therefore, the detection equipment is mainly used to simulate the actual use condition of the rotary joint 4 to check whether the sealing performance meets the standard requirements. If the rotary joint 4 on one of the inspection stations needs to be disassembled, it is only necessary to start the clutch 82 to disassemble the turntable 83 from the transmission shaft 81. At this time, the simulated rotating shaft 3 loses power and stops rotating, and then the import / export corresponding to the inspection station is closed to disassemble the rotary joint 4, which does not affect the inspection at other inspection stations.

[0022] The utility model sets up a plurality of inspection stations, each of which is provided with a simulated shaft 3 which can be connected to two rotary joints 4 at the same time. The simulated shaft 3 is driven to rotate by a driving motor 80, so as to provide a practical application scenario for the rotary joint 4. At the same time, hot water is supplied by the set mold temperature controller 1, and the hot water is supplied from the rotary joint 4 on one side of the simulated shaft 3 by the first main pipe 5, and then outputted from the rotary joint 4 on the other side of the simulated shaft 3, so as to inspect the rotary joint 4 by simulating a real scenario, and one inspection station can realize synchronous inspection of two rotary joints 4, realize automatic inspection of the rotary joint 4, and simultaneous inspection of multiple rotary joints 4, thereby greatly improving the inspection efficiency of the rotary joint 4. At present, the detection speed of the rotary joint 4 is increased by shortening the detection time. However, if the detection time is insufficient, it is difficult for workers to find problems with the rotary joint 4 in a short time. At the same time, the existing water pumps are manual and it is difficult to maintain sufficient pressure, which causes the quality of the current rotary joint 4 to be uneven. Compared with the existing structure, the simulation of this device is closer to the actual use environment of the rotary joint 4, so that the detection of the rotary joint 4 is more in line with the actual use conditions. The detection device can detect multiple rotary joints 4 at the same time, thereby improving the detection efficiency and avoiding the problem of insufficient detection time. At the same time, the rotary joint 4 under detection can be ground by simulating the rotating shaft 3 to make it more suitable for the equipment actually connected and used.

[0023] In this embodiment, the transmission shaft 81 is correspondingly arranged below each simulated shaft 3, and the simulated shaft 3 and the transmission shaft 81 are both rotatably connected to the frame 2 through bearings. The frame 2 is divided into upper and lower layers, the simulated shaft 3 is arranged on the upper layer, and the transmission shaft 81 is arranged on the lower layer. Figure 2 As shown, the first main pipe 5 and the two branch pipes 60 are parallel to the length direction of the frame 2. The first main pipe 5 penetrates from one end of the frame 2 and runs through the frame 2. The two branch pipes 60 are respectively arranged on both sides of the frame 2 in the width direction.

[0024] In this embodiment, the two adjacent transmission shafts 81 are connected by a transmission belt, and the transmission shaft 81 close to the driving motor 80 is connected to the driving motor 80 through a transmission belt. A transmission disk is arranged outside the transmission shaft 81, and at least two transmission disks are arranged on each transmission shaft 81, which are used to respectively connect the left and right adjacent transmission shafts 81 to form a series-connected driving system. The driving motor 80 drives one of its transmission shafts 81, and then drives its adjacent transmission shafts 81 in turn through the transmission shaft 81; the driving motor 80 can also be directly used to connect the transmission shafts 81 together, such as setting transmission disks at both ends of the frame 2, one of which is connected to the driving motor 80, and then a transmission belt is used to be wound around the two transmission disks together, and each transmission shaft 81 is arranged in the transmission belt, and the transmission belt is used to drive each transmission shaft 81 to rotate synchronously.

[0025] In this embodiment, a groove 830 is provided on the inner side of the rotating disk 83, and a positioning block 811 corresponding to the groove 830 is provided on the outer side of the transmission shaft 81. The clutch 82 also includes a gear lever 84 fixedly connected to the rotating disk 83. There is a certain gap between the rotating disk 83 and the transmission shaft 81. Under normal conditions, the transmission shaft 81 cannot directly drive the rotating disk 83 to rotate, but through the cooperation between the groove 830 and the positioning block 811. The length of the positioning block 811 corresponds to the thickness of the rotating disk 83. When the rotating disk 83 needs to be detached from the transmission shaft 81, the transmission shaft 81 can directly drive the rotating disk 83 to rotate. When the detection of the rotary joint 4 at the detection station is completed, or a problem is detected, the clutch 82 can be used to stop the transmission shaft 81 on the detection station from transmitting to the simulated shaft 3, that is, the rotation of the simulated shaft 3 is paused, and then the rotary joint 4 can be disassembled to realize the separate disassembly and assembly of each detection station without affecting other detection stations.

[0026] In this embodiment, the first main pipe 5 is provided with two first openings corresponding to one of the inspection stations. The first openings and the rotary joint 4 are close to each other. For example, the first opening on the front side is connected to the rotary joint 4 on the front side. At this time, the first stop valve 101 on the first opening on the rear side is closed. Figure 2-3 As shown, two first openings are provided on one inspection station, and the two first openings are symmetrically arranged on both sides of the first main pipe 5 along the width direction of the frame 2 , that is, the number of the first openings corresponds to the number of the rotary joints 4 .

[0027] In this embodiment, the first opening is provided with a first stop valve 101, and the three-way pipe 7 includes three pipe openings, one of which is used to connect the rotary joint 4, and the other two pipe openings are provided with second stop valves 102. The first stop valve 101 and the second stop valve 102 are mainly used to control the water flow in and out of the rotary joint 4. The three-way pipe 7 is an existing structure. For the convenience of distinction, the three pipe openings are divided into pipe opening a 701, pipe opening b 702 and pipe opening c 703. Pipe opening a 701 is used to connect the rotary joint 4, pipe opening b 702 is used to connect the second opening, and pipe opening c 703 is mainly used for pressure relief. The second stop valve 102 is set on pipe opening b 702 and pipe opening c 703. Preferably, pipe opening a 701 can be connected to the rotary joint 4 through a hose.

[0028] In this embodiment, a third stop valve 103 is provided at one end of the first main pipe 5 close to the mold temperature controller 1, and a fourth stop valve 104 is provided at one end of the two branch pipes 60 close to the second main pipe 6. The stop valves can be manual or electric and are mainly used to switch the corresponding water flow openings.

[0029] In this embodiment, the first opening is provided with a first flow sensor 201, and the three-way pipe 7 is provided with a second flow sensor 202. By comparing the data of the first flow sensor 201 and the second flow sensor 202, the flow state of the water before and after the rotary joint 4 is automatically detected, so as to obtain the sealing performance of the rotary joint 4 and see whether the water leakage is less than the sealing standard of the rotary joint 4. When using the flow sensor, it is necessary to consider whether the temperature of the hot water flowing through is too high. If the setting temperature is too high, the flow sensor may not be used. Furthermore, a control panel may be provided at the mold temperature controller 1 and the first flow sensor 201 and the second flow sensor 202 may be connected, or a flow sensor with a display may be directly used.

[0030] In the first embodiment, the second main pipe 6 is used as the water inlet pipe. It should be noted that the connection of each detection station is the same. Figure 1 and 3 As shown, Figure 1 For the overall structure of the device, it should be noted that each second opening is equipped with a three-way pipe 7 for connecting the rotary joint 4. Figure 3For the detection station structure close to the mold temperature controller 1, at each detection station, the rotary joint 4 on the front side of the simulated shaft 3 is connected to the first opening of the first main pipe 5, which can be connected through a hose, and the water flow is controlled by the first stop valve 101 of the first opening, and the rotary joint 4 located at the rear side of the simulated shaft 3 on the same detection station is connected to the second opening of the rear branch pipe 60 through the three-way pipe 7. At this time, the a pipe port 701 and the b pipe port 702 of the three-way pipe 7 are respectively connected to the corresponding second openings of the rotary joint 4 and the rear branch pipe 60 on the rear side, and the remaining c pipe port 703 is used for pressure relief. The driving motor 80 is started, driving each transmission shaft 81 to rotate, and then the transmission shaft 81 drives the simulated shaft 3 to rotate. Before the mold temperature controller 1 starts, the branch pipe 60 on the front side of the second main pipe 6 is closed first, so that the hot water of the mold temperature controller 1 flows from the second main pipe 6 to the branch pipe 60 on the rear side, and then flows to the rotary joint 4 on the rear side through the three-way pipe 7, flows to the rotary joint 4 on the front side through the simulated shaft 3, and then flows down to the first main pipe 5 from the rotary joint 4 on the front side. The rotary joint 4 on the front side of each detection station flows into and merges into the first main pipe 5 through the corresponding first opening, and finally flows back to the mold temperature controller 1 from the first main pipe 5 to form a closed loop.

[0031] As shown above, hot water flows from the rear branch pipe 60 to each second opening, and then is transmitted to the rotary joint 4 through the three-way pipe 7, and then to the front rotary joint 4 through the simulated shaft 3, and finally flows back to the first main pipe 5. The hot water circulates continuously through the connection structure. During this period, the staff checks on it. If the detection time is up or a serious water leakage is detected and the rotary joint 4 needs to be disassembled, for example, if the rotary joint 4 on a detection station needs to be disassembled, it is only necessary to start the clutch 82 of the detection station, that is, to bend the gear lever 84 to disengage the turntable 83 from the transmission shaft 81, so that the simulated shaft 3 loses power and stops rotating. At this time, close the corresponding stop on the detection station. Stop valve, preferably close the second stop valve 102 at the water inlet end, i.e. the second opening, and then close the first stop valve 101 at the water outlet end, i.e. the first opening. After the hot water of the detection station is discharged, open the second stop valve 102 of the three-way pipe 7 to release the pressure, and finally disassemble the rotary joint 4. During the disassembly process, the simulated shaft 3 on other detection stations is not affected and continues to rotate. After the rotary joint 4 is disassembled and assembled, re-engage the gear lever 84 to re-match the turntable 83 with the transmission shaft 81, close the second stop valve 102 for pressure relief, and the transmission shaft 81 continues to provide power for the simulated shaft 3. Reopen the stop valves of each opening to allow hot water to continue to flow to the detection station.

[0032] Embodiment 2, as Figure 2As shown, when the rotary joint 4 on the rear side of the simulated rotating shaft 3 is connected to the first opening of the first main pipe 5 (the connection corresponds to the first opening on the rear side, and the first opening on the front side will be closed by the first stop valve 101), the rotary joint 4 located on the front side of the simulated rotating shaft 3 on the same detection station is connected to the second opening of the front branch pipe 60 through the three-way pipe 7. At this time, the a pipe opening 701 and the b pipe opening 702 of the three-way pipe 7 are respectively connected to the corresponding second openings on the front rotary joint 4 and the front branch pipe 60, and the c pipe opening 70 3 is used for pressure relief, and the connection of each detection station is the same, that is, opposite to the first embodiment. At this time, the mold temperature controller 1 is heated to a certain temperature, such as 150°C, so that it generates a pressure sufficient for detection. The hot water flows from the front branch pipe 60 to each second opening, and is transmitted through the three-way pipe 7 to the rotary joint 4 located on the front side of each detection station, and then flows back to the first opening through the simulated rotating shaft 3 and then to the rotary joint 4 on the rear side, and finally flows back to the mold temperature controller 1 through the first main pipe 5 to form a closed loop. At this time, the water temperature has been reduced and flows back to the mold temperature controller 1 for reheating.

[0033] In the third embodiment, the first main pipe 5 is used as the water inlet pipe, and the second main pipe 6 is used as the water outlet pipe. At the detection station, the two rotating joints 4 at the front and rear of the simulated shaft 3 are connected with three-way pipes 7, and the second opening of the second main pipe 6 is connected through the three-way pipe 7. At this time, it is only necessary to connect the first opening to the three-way pipe 7 at the front or rear side through a hose. If the three-way pipe 7 at the front side is connected, the remaining C pipe opening 703 of the three-way pipe 7 at the rear side is used for pressure relief. The driving motor 80 starts to drive the transmission shafts 81, and the transmission shafts 81 then drive the simulated shaft 3 to rotate. After the mold temperature controller 1 is heated, hot water is supplied to the first main pipe 5 and distributed to each The first opening corresponding to the detection station is transmitted from the first opening to the three-way pipe 7 on the front or rear side and supplied to the corresponding rotary joint 4, and then flows back to the second main pipe 6 via the simulated shaft 3 to another rotary joint 4. If it is necessary to disassemble the rotary joint 4 of a certain detection station at this time, it is only necessary to turn the corresponding gear lever 84 to disengage the turntable 83 from the transmission shaft 81, and then close the corresponding stop valves in turn, open the stop valve of the c pipe port 703 to release the pressure, and then disassemble and assemble. During the detection process, the simulated shaft 3 and the rotary joint 4 maintain relative rotational motion, and the simulated shaft 3 is rotated to grind the rotary joint 4 to make it more suitable for installation.

[0034] To sum up, the structures on the detection stations are symmetrically arranged in the width direction of the frame 2. For example, two rotary joints 4 are symmetrically arranged on the simulated rotating shaft 3 on one detection station. The two rotary joints 4 are connected to the three-way pipe 7. The branch pipe 60 is also symmetrically arranged with two. The first main pipe 5 is arranged in the middle of the frame and symmetrically has a first opening. A total of 10 rotary joints 4 can be installed for simultaneous detection. Moreover, the equipment can provide multiple flow directions. The staff can choose to operate at the front or rear side of the equipment for easy operation.

[0035] The above embodiments are preferred embodiments of the present utility model. All structures similar to the present utility model and equivalent changes made thereto should fall within the protection scope of the present utility model.

Claims

1. A rotary joint detection device, characterized in that: The invention comprises a mold temperature controller, a driving system and a frame. The frame is arranged along its length direction with a plurality of inspection stations. Each of the inspection stations is provided with a simulated rotating shaft parallel to the width direction of the frame. Rotary joints are rotatably connected at both ends of the simulated rotating shaft. The mold temperature controller comprises a first main pipe and a second main pipe. The first main pipe is provided with a first opening for connecting the rotary joint. The second main pipe is commonly connected with two symmetrically arranged branch pipes. Both branch pipes are provided with a second opening. The second opening is provided with a three-way pipe for connecting the rotary joint. The driving system comprises a driving motor, and a plurality of transmission shafts and clutches corresponding to the inspection stations. The driving motor is transmission-connected to each of the transmission shafts. The clutch comprises a turntable detachably connected to the transmission shaft. The transmission shaft is transmission-connected to the simulated rotating shaft via the turntable.

2. The detection device for a rotary joint according to claim 1, characterized in that: The transmission shaft is correspondingly arranged below each simulated rotating shaft, and the simulated rotating shaft and the transmission shaft are both rotatably connected to the frame through bearings.

3. The detection device for a rotary joint according to claim 1, characterized in that: The two adjacent transmission shafts are connected by a transmission belt, and the transmission shaft close to the driving motor is connected to the driving motor by a transmission belt.

4. The detection device for a rotary joint according to claim 1, characterized in that: A groove is arranged on the inner side of the rotating disk, a positioning block corresponding to the groove is arranged on the outer side of the transmission shaft, and the clutch further comprises a gear lever fixedly connected to the rotating disk.

5. The detection device for a rotary joint according to claim 1, characterized in that: The first main pipe is provided with two first openings corresponding to one of the detection stations.

6. The detection device for a rotary joint according to claim 1, characterized in that: The first opening is provided with a first stop valve, the three-way pipe includes three pipe openings, one of the pipe openings is used to connect the rotary joint, and the other two pipe openings are both provided with second stop valves.

7. The rotary joint detection device according to claim 1, characterized in that: A third stop valve is arranged at one end of the first main pipe close to the mold temperature controller, and a fourth stop valve is arranged at one end of the two branch pipes close to the second main pipe.

8. The rotary joint detection device according to claim 1, characterized in that: The first opening is provided with a first flow sensor, and the three-way pipe is provided with a second flow sensor.

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