Pilot operated safety valve

Abstract

The utility model relates to the technical field of pilot operated safety valves, in particular to a pilot operated safety valve. Comprising an adjusting device, the adjusting device comprises a fixing disc, the fixing disc is fixedly connected with a safety valve body, the two ends of the side face, away from a medium inlet, of the fixing disc are fixedly connected with first motors, the output ends of the first motors are fixedly connected with lead screws, and the arc surfaces of the lead screws are in threaded connection with adjusting plates; adjusting blocks are connected to the inner walls of the adjusting plates in a sliding mode, contact plates are fixedly connected to the sides, close to each other, of the two adjusting blocks, and clamping grooves are formed in the sides, away from the contact plates, of the adjusting blocks. And the adjusting device can be used for replacing a screw for connection, so that the connecting speed between the medium inlet and the connecting pipeline can be increased through the adjusting device, and the connecting stability can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pilot-operated safety valves, in particular to a pilot-operated safety valve. Background Art

[0002] Pilot operated safety valve is a kind of valve that can control the flow rate of the medium in the safety valve. Pilot operated safety valve is widely used in industrial and engineering fields.

[0003] The utility model with announcement number CN212868605U discloses a pilot safety valve, and the key points of its technical solution are: including a main valve, a pilot valve assembly for relieving pressure on the main valve, a first pressure-conducting pipeline, a second pressure-conducting pipeline, a first check mechanism, a second check mechanism, and a third pressure-conducting pipeline. The system pipeline is also connected to the pilot valve assembly through the first pressure-conducting pipeline, and the pilot valve assembly is connected to the main valve head inlet through the second pressure-conducting pipeline. The first check mechanism is arranged on the first pressure-conducting pipeline; one end of the third pressure-conducting pipeline is connected to the main valve outlet, and the other end of the third pressure-conducting pipeline is connected to any part of the second pressure-conducting pipeline or the main valve head inlet, and the second check mechanism is arranged on the third pressure-conducting pipeline. When the pilot safety valve in the utility model is used to meet the reverse sealing working condition, the reverse sealing function of the pilot safety valve meets the system requirements. The pilot safety valve is used in the nuclear industry. When the back pressure still exists, it has a sealing function to prevent the medium from flowing to the outside of the containment through the pilot safety valve.

[0004] In response to the above-mentioned related content, the following technical defects exist: when the medium inlet of the pilot safety valve is connected to the connecting pipe, it is found that the height of the medium inlet and the connecting pipe is relatively low. When workers connect the two, the installation viewing angle that workers can observe is also poor, and only smaller tools can be used for installation. This also leads to a slow installation speed between the connecting pipe and the medium inlet.

[0005] Therefore, it is necessary to provide a new pilot safety valve to solve the above technical problems. Utility Model Content

[0006] The purpose of the utility model is to solve the problem in the prior art that the height of the medium inlet and the connecting pipe is relatively low, and when the workers connect the two, the installation viewing angle that the workers can observe is also poor, and only small-sized tools can be used for installation, which also leads to the disadvantage of slow installation speed between the connecting pipe and the medium inlet.

[0007] In order to solve the above technical problems, the utility model provides a pilot-operated safety valve, comprising: a safety valve body, a pilot device is installed on one side of the safety valve body, a medium outlet is fixedly connected to the side of the safety valve body away from the pilot device, a medium inlet is fixedly connected to one end of the safety valve body, an adjusting device is provided at one end of the safety valve body close to the medium inlet, the adjusting device comprises a fixed disk, the fixed disk is fixedly connected to the safety valve body, both ends of the side of the fixed disk away from the medium inlet are fixedly connected to a first motor, a screw rod is fixedly connected to the output end of the first motor, an adjusting plate is threadedly connected to the arc surface of the screw rod, an adjusting block is slidably connected to the inner wall of the adjusting plate, a contact plate is fixedly connected to the sides of the two adjusting blocks close to each other, a card slot is provided on the side of the adjusting block away from the contact plate, a limiting ring is fixedly connected to one side of the adjusting plate, a guide rod is slidably penetrated through the inner wall of the limiting ring, the guide rod is fixedly connected to the fixed disk, the inner wall of the adjusting block is slidably penetrated through the limiting rod, and the limiting rod and the adjusting block are slidably penetrated.

[0008] The effect achieved by the above components is: the connecting pipe can be connected to the medium outlet of the safety valve body by screws, and then the output pipe is connected to the medium inlet by screws. At this time, when the medium flows into the safety valve body through the medium inlet, the pilot device can adjust and control the pressure of the medium flow, so that the adjusted and controlled medium can flow out from the output pipe through the medium outlet. However, the height of the medium inlet and the connecting pipe is low, and the viewing angle that workers can observe when connecting is also poor. Workers can only use smaller tools when using installation tools, which also leads to a slower installation speed between the connecting pipe and the medium inlet. At this time, the connecting pipe and the medium inlet can be connected by an adjusting device instead of screws, thereby increasing the connection speed of the two.

[0009] Preferably, the arc surface of the limiting rod is sleeved with a spring, and two ends of the spring are respectively fixedly connected to the adjustment plate and the limiting rod.

[0010] The effect achieved by the above components is that when the limit rod is connected to the adjustment plate, the spring installed on the limit rod can improve the stability of the connection between the limit rod and the adjustment plate, thereby improving the connection effect between the two.

[0011] Preferably, a protective shell is fixedly connected to a side of the fixing plate close to the first motor, and a plurality of heat dissipation holes are formed on the arc surface of the protective shell.

[0012] The effect achieved by the above components is: the surface of the first motor is relatively fragile, and the protective shell can protect the surface of the first motor, thereby increasing the service life of the first motor through the protective shell. The heat dissipation holes opened on the protective shell can also ventilate the interior of the protective shell to prevent the heat energy generated by the first motor when working from being unable to be discharged, thereby affecting the service life of the first motor.

[0013] Preferably, a connection pad is fixedly connected to one side of the contact plate close to the safety valve body, and the size of the connection pad is the same as the size of the inner wall of the contact plate.

[0014] The effect achieved by the above components is that when the contact plate contacts the connecting pipe of the medium inlet, the connecting pad installed on the contact plate can improve the contact stability between the contact plate and the connecting pipe, and improve the connection effect between the connecting pipe and the contact plate.

[0015] Preferably, one end of the limiting rod away from the spring is fixedly connected to a guide block, and the cross-section of the guide block is arc-shaped.

[0016] The effect achieved by the above-mentioned components is: when the limit rod is connected to the adjustment plate, the guide block installed on the limit rod can increase the connection speed when the limit rod is connected to the adjustment plate, thereby improving the limiting effect of the limit rod on the adjustment block in the adjustment plate by increasing the connection speed between the two.

[0017] Preferably, an auxiliary device is provided on the side of the safety valve body close to the medium outlet, and the auxiliary device includes a bottom plate, which is fixedly connected to the safety valve body, and an adjusting frame plate is fixedly connected to the side of the bottom plate away from the safety valve body, and a second motor is fixedly connected to one side of the adjusting frame plate, and a bidirectional screw is fixedly connected to the output end of the second motor, and sliding blocks are threadedly connected to both ends of the circular arc surface of the bidirectional screw, and the sliding block is slidably connected to the adjusting frame plate, and a clamping plate is fixedly connected to one side of the sliding block.

[0018] The effect achieved by the above components is that when the contact outlet is connected to the pipeline, the lower end of the pipeline can be supported by an auxiliary device, so that the pipeline can be supported to avoid the connection between the pipeline and the medium outlet being loosened due to the influence of gravity when the pipeline is connected to the medium outlet for a long time.

[0019] Preferably, a plurality of auxiliary blocks are fixedly connected to a side of the sliding block away from the clamping plate, and the plurality of auxiliary blocks are evenly distributed on one side of the sliding block.

[0020] The effect achieved by the above components is that when the sliding block slides in the adjustment frame, the auxiliary block installed on the sliding block can reduce the friction between the sliding block and the adjustment frame, thereby improving the sliding stability of the sliding block in the adjustment frame through the auxiliary block.

[0021] Compared with the related art, the pilot-operated safety valve provided by the utility model has the following beneficial effects:

[0022] The utility model provides a pilot-operated safety valve. By arranging an adjusting device, when the medium inlet is connected to the connecting pipeline, the adjusting device can be used to replace the screws for connection, so that the connection speed between the medium inlet and the connecting pipeline can be increased by the adjusting device, and the stability of the connection can be further improved.

[0023] By setting up an auxiliary device, after the pipeline is connected to the medium outlet on the safety valve, the lower end of the pipeline can be supported by the auxiliary device, so as to prevent the pipeline from loosening with the medium outlet under the influence of gravity, thereby affecting the effect of medium transportation through the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of the pilot-operated safety valve provided by the utility model;

[0025] Figure 2 for Figure 1 The structural schematic diagram of the regulating device shown;

[0026] Figure 3 for Figure 1 A schematic diagram of a partial disassembled structure of the regulating device shown;

[0027] Figure 4 for Figure 1 A schematic diagram of the structure of the auxiliary device shown;

[0028] Figure 5 for Figure 1 A partial enlarged structural schematic diagram of the auxiliary device is shown.

[0029] Numbers in the figure: 1. Safety valve body; 2. Adjusting device; 201. Fixed plate; 202. First motor; 203. Screw rod; 204. Adjusting block; 205. Limiting ring; 206. Guide rod; 207. Slot; 208. Contact plate; 209. Limiting rod; 210. Heat dissipation hole; 211. Spring; 212. Connecting pad; 213. Guide block; 214. Adjusting plate; 215. Protective shell; 3. Auxiliary device; 31. Bottom plate; 32. Adjusting frame plate; 33. Second motor; 34. Bidirectional screw; 35. Sliding block; 36. Clamp; 37. Auxiliary block; 4. Pilot device; 5. Medium outlet; 6. Medium inlet. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0032] See also Figures 1 to 5 The pilot-operated safety valve provided by the embodiment of the utility model comprises: a safety valve body 1, a pilot device 4 is installed on one side of the safety valve body 1, a medium outlet 5 is fixedly connected to the side of the safety valve body 1 away from the pilot device 4, a medium inlet 6 is fixedly connected to one end of the safety valve body 1, an adjusting device 2 is provided at one end of the safety valve body 1 close to the medium inlet 6, and an auxiliary device 3 is provided on the side of the safety valve body 1 close to the medium outlet 5.

[0033] In the embodiments of the present invention, please refer to Figure 2 and Figure 3The adjusting device 2 includes a fixed disk 201, which is fixedly connected to the safety valve body 1. Both ends of the side of the fixed disk 201 away from the medium inlet 6 are fixedly connected to the first motor 202. The output end of the first motor 202 is fixedly connected to the screw rod 203. The arc surface of the screw rod 203 is threadedly connected to the adjusting plate 214. The inner wall of the adjusting plate 214 is slidably connected to the adjusting block 204. The two adjusting blocks 204 are fixedly connected to the contact plate 208 on the side close to each other. A card slot 207 is provided on the side of the adjusting block 204 away from the contact plate 208. One side of the adjusting plate 214 is fixedly connected to the limiting ring 205. The inner wall of the limiting ring 205 is slidably penetrated by a guide rod 206. The guide rod 206 is fixedly connected to the fixed disk 201. The inner wall of the regulating block 204 slides through the limit rod 209, and the limit rod 209 slides through the regulating block 204, and the connecting pipe can be connected to the medium outlet 5 of the safety valve body 1 by screws, and then the output pipe is connected to the medium inlet 6 by screws. At this time, when the medium flows into the safety valve body 1 through the medium inlet 6, the pilot device 4 can adjust and control the pressure of the medium flow, so that the medium that has completed the adjustment and control can flow out from the output pipe through the medium outlet 5. However, the height of the medium inlet 6 and the connecting pipe is low, and the viewing angle that the worker can observe when connecting is also poor. The worker can only use small tools when using installation tools, which also leads to a slow installation speed between the connecting pipe and the medium inlet 6. The connecting pipe and the medium inlet 6 can be connected by the adjusting device 2 instead of the screws, so as to improve the connection speed of the two. The arc surface of the limit rod 209 is sleeved with a spring 211, and the two ends of the spring 211 are fixedly connected to the adjusting plate 214 and the limit rod 209 respectively. When the limit rod 209 is connected to the adjusting plate 214, the spring 211 installed on the limit rod 209 can improve the stability of the limit rod 209 and the adjusting plate 214 when they are connected, and improve the connection effect between the two. A protective shell 215 is fixedly connected to one side of the fixed disk 201 close to the first motor 202. The arc surface of the protective shell 215 is provided with a plurality of heat dissipation holes 210. The surface of the first motor 202 is relatively fragile. At this time, the protective shell 215 can protect the first motor 202 from heat. 2 is protected, so that the service life of the first motor 202 can be improved through the protective shell 215. The heat dissipation holes 210 opened on the protective shell 215 can also ventilate the interior of the protective shell 215 to prevent the heat energy generated by the first motor 202 from being unable to be discharged when the first motor 202 is working, which affects the service life of the first motor 202. A connecting pad 212 is fixedly connected to the side of the contact plate 208 close to the safety valve body 1. The size of the connecting pad 212 is the same as the inner wall size of the contact plate 208. When the contact plate 208 contacts the connecting pipe of the medium inlet 6, the connecting pad 212 installed on the contact plate 208 can improve the contact stability between the contact plate 208 and the connecting pipe, and improve the connection effect between the connecting pipe and the contact plate 208.The end of the limiting rod 209 away from the spring 211 is fixedly connected with a guide block 213, and the cross section of the guide block 213 is arc-shaped. When the limiting rod 209 is connected to the adjustment plate 214, the guide block 213 installed on the limiting rod 209 can increase the connection speed when the limiting rod 209 and the adjustment plate 214 are connected, thereby improving the limiting effect of the limiting rod 209 on the adjustment block 204 in the adjustment plate 214 by increasing the connection speed between the two.

[0034] In the embodiments of the present invention, please refer to Figure 4 and Figure 5 The auxiliary device 3 includes a bottom plate 31, which is fixedly connected to the safety valve body 1. The side of the bottom plate 31 away from the safety valve body 1 is fixedly connected to an adjustment frame plate 32, and one side of the adjustment frame plate 32 is fixedly connected to a second motor 33. The output end of the second motor 33 is fixedly connected to a bidirectional screw 34. Both ends of the arc surface of the bidirectional screw 34 are threadedly connected to a sliding block 35. The sliding block 35 is slidably connected to the adjustment frame plate 32. One side of the sliding block 35 is fixedly connected to a clamping plate 36. When the contact outlet is connected to the pipeline, the lower end of the pipeline can be supported by the auxiliary device 3, so that it can pass By supporting the pipeline, it is prevented that the connection between the pipeline and the medium outlet 5 is loosened under the influence of gravity when the pipeline is connected to the medium outlet 5 for a long time. A plurality of auxiliary blocks 37 are fixedly connected to the side of the sliding block 35 away from the clamping plate 36. The plurality of auxiliary blocks 37 are evenly distributed on one side of the sliding block 35. When the sliding block 35 slides in the adjustment frame plate 32, the auxiliary blocks 37 installed on the sliding block 35 can reduce the friction between the sliding block 35 and the adjustment frame plate 32, so that the auxiliary blocks 37 can improve the stability of the sliding of the sliding block 35 in the adjustment frame plate 32.

[0035] The working principle of the pilot-operated safety valve provided by the utility model is as follows: when it is necessary to connect the connecting pipe to the medium inlet 6, the connecting pipe is placed on the side of the two contact plates 208 close to the safety valve body 1, and then the adjusting plate 214 is pushed in the direction of the contact plate 208, and the adjusting plate 214 moves to slide on the adjusting block 204, and then the limiting rod 209 is inserted into the card slot 207 provided on the adjusting block 204 through the adjusting plate 214, and the adjusting plate 214 can be fixed on one side of the adjusting block 204 through the limiting rod 209, and then the first motor 202 is started. The movement of the first motor 202 will drive the adjustment plate 214 and the adjustment block 204 to move through the screw rod 203, and the limiting ring 205 cooperates with the guide rod 206 to limit the movement of the adjustment plate 214 and the adjustment block 204, so that the movement support of the adjustment block 204 and the adjustment plate 214 can be moved up and down, so that the contact plate 208 and the connecting pipe can be driven by the first motor 202 to connect with the medium inlet 6, so that the connecting pipe can be installed on the contact inlet, and when the limiting rod 209 is connected to the adjustment plate 214, the spring installed on the limiting rod 209 The spring 211 can improve the stability of the connection between the limit rod 209 and the adjustment plate 214, and improve the connection effect between the two. The surface of the first motor 202 is relatively fragile. At this time, the protective shell 215 can protect the surface of the first motor 202, so that the service life of the first motor 202 can be increased through the protective shell 215. The heat dissipation holes 210 opened on the protective shell 215 can also ventilate the interior of the protective shell 215 to avoid the heat energy generated by the first motor 202 when working. Can not be discharged, affecting the service life of the first motor 202, contact plate 208 and When the connecting pipe of the medium inlet 6 is in contact, the connecting pad 212 installed on the contact plate 208 can improve the contact stability between the contact plate 208 and the connecting pipe, and improve the connection effect between the connecting pipe and the contact plate 208. When the limiting rod 209 is connected to the adjusting plate 214, the guide block 213 installed on the limiting rod 209 can increase the connection speed when the limiting rod 209 is connected to the adjusting plate 214, thereby improving the limiting effect of the limiting rod 209 on the adjusting block 204 in the adjusting plate 214 by increasing the connection speed between the two.

[0036] When it is necessary to support the output pipe connected to the medium outlet 5, the second motor 33 is started. The movement of the second motor 33 will drive the sliding block 35 through the bidirectional screw 34 to slide in the direction of approaching each other in the adjustment frame 32, so that the sliding of the sliding block 35 can drive the clamping plate 36 to move toward the surface of the output pipe, so that the lower end of the output pipe can be supported by the clamping plate 36, so as to avoid looseness between the output pipe and the medium outlet 5, affecting the conveying effect of the output pipe on the medium. When the sliding block 35 slides in the adjustment frame 32, the auxiliary block 37 installed on the sliding block 35 can reduce the friction between the sliding block 35 and the adjustment frame 32, so that the stability of the sliding of the sliding block 35 in the adjustment frame 32 can be improved by the auxiliary block 37.

[0037] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0038] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Pilot operated safety valve, characterized in that: include: A safety valve body (1), wherein a pilot device (4) is installed on one side of the safety valve body (1), a side of the safety valve body (1) away from the pilot device (4) is fixedly connected to a medium outlet (5), one end of the safety valve body (1) is fixedly connected to a medium inlet (6), an end of the safety valve body (1) close to the medium inlet (6) is provided with an adjustment device (2), the adjustment device (2) comprising a fixed disk (201), the fixed disk (201) being fixedly connected to the safety valve body (1), both ends of the side of the fixed disk (201) away from the medium inlet (6) being fixedly connected to a first motor (202), an output end of the first motor (202) being fixedly connected to a screw rod (203), the screw rod (203) 03) is threadedly connected to an adjustment plate (214), the inner wall of the adjustment plate (214) is slidably connected to an adjustment block (204), the sides of the two adjustment blocks (204) close to each other are fixedly connected to a contact plate (208), the side of the adjustment block (204) away from the contact plate (208) is provided with a slot (207), one side of the adjustment plate (214) is fixedly connected to a limit ring (205), the inner wall of the limit ring (205) is slidably penetrated by a guide rod (206), the guide rod (206) is fixedly connected to the fixed disk (201), the inner wall of the adjustment block (204) is slidably penetrated by a limit rod (209), and the limit rod (209) and the adjustment block (204) are slidably penetrated.

2. The pilot operated safety valve according to claim 1, characterized in that: The arc surface of the limiting rod (209) is sleeved with a spring (211), and two ends of the spring (211) are respectively fixedly connected to the adjustment plate (214) and the limiting rod (209).

3. The pilot operated safety valve according to claim 1, characterized in that: A protective shell (215) is fixedly connected to one side of the fixed disk (201) close to the first (202) motor, and a plurality of heat dissipation holes (210) are provided on the arc surface of the protective shell (215).

4. The pilot operated safety valve according to claim 1, characterized in that: A connection pad (212) is fixedly connected to one side of the contact plate (208) close to the safety valve body (1); the size of the connection pad (212) is the same as the size of the inner wall of the contact plate (208).

5. The pilot operated safety valve according to claim 1, characterized in that: One end of the limiting rod (209) away from the spring (211) is fixedly connected to a guide block (213), and the cross section of the guide block (213) is arc-shaped.

6. The pilot operated safety valve according to claim 1, characterized in that: An auxiliary device (3) is provided on a side of the safety valve body (1) close to the medium outlet (5), and the auxiliary device (3) comprises a bottom plate (31), the bottom plate (31) is fixedly connected to the safety valve body (1), and an adjustment frame plate (32) is fixedly connected to a side of the bottom plate (31) away from the safety valve body (1), a second motor (33) is fixedly connected to one side of the adjustment frame plate (32), a bidirectional screw (34) is fixedly connected to the output end of the second motor (33), a sliding block (35) is threadedly connected to both ends of the circular arc surface of the bidirectional screw (34), the sliding block (35) is slidably connected to the adjustment frame plate (32), and a clamping plate (36) is fixedly connected to one side of the sliding block (35).

7. The pilot operated safety valve according to claim 6, characterized in that: A plurality of auxiliary blocks (37) are fixedly connected to a side of the sliding block (35) away from the clamping plate (36), and the plurality of auxiliary blocks (37) are evenly distributed on one side of the sliding block (35).

Images