A low-flow-resistance butterfly-type flip-up emergency release device

Abstract

The present invention discloses a low-flow-resistance butterfly-type flip-type emergency release device, belonging to the technical field of fluid equipment, which includes a main seal, a hoop release device, a left housing and a right housing. The left housing and the right housing are sealed by the main seal. The hoop release device fixes the connection between the left housing and the right housing through the main seal. Flap seal devices are provided in both the left housing and the right housing. The flap seal device is the core component of the present invention. The special structural design of the flap seal device can ensure the flow rate while ensuring the sealing effect in case of emergency. A first limiting block is also provided in the left housing, and a second limiting block is provided in the right housing. The first limiting block contacts and fixes the flap valve core assembly in the right housing, and the second limiting block contacts and fixes the flap valve core assembly in the left housing, solving the technical problems of poor flow rate and poor safety of the existing equipment, and is mainly applied to fluid transportation.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid equipment, and specifically to a low-flow-resistance butterfly-type flipping emergency disconnection device. Background Technique

[0002] Emergency disconnection devices are mainly used in situations where pipelines may be subject to tensile loads. Without an emergency disconnection device, pipeline fractures may occur. Such pipelines are mainly used as connecting pipelines for material transportation between automobiles, trains and tank farm sites. If the pipeline breaks, the materials transported along the pipeline will flow out freely from the fracture end of the pipeline, which may lead to serious leaks, high cleaning costs and serious environmental pollution. The emergency disconnection device is used to disconnect when the pipeline is subject to a tensile load, and the internal valve core automatically closes to act as a valve to avoid leakage. At present, there are many problems with the emergency disconnection devices used in China for loading and unloading petrochemical media, which are specifically as follows:

[0003] 1. The internal sealing valve core of the emergency disconnection device is in an open state when transporting the medium. The cross-section of the valve core is in the direction of the medium flow. The medium can only pass through from the side, which causes particularly serious resistance and pressure reduction to the medium, resulting in the loading and unloading vehicle speed being about 3 times slower than before the disconnection throttling device was installed, seriously affecting the loading speed.

[0004] 2. The sealing element at the valve core is embedded in the valve core by a dovetail groove structure. During use, the medium flow rate is too fast, and there is a great risk that the sealing element will be washed off and separated from the valve core. If this situation occurs, when the emergency disconnection device disconnects, it cannot perform the function of disconnecting and intercepting the flow, resulting in accidents. Summary of the Invention

[0005] In order to solve the technical problems proposed in the background technique, the present invention provides a low-flow-resistance butterfly-type flipping emergency disconnection device, and the technical solution adopted is as follows:

[0006] A low-flow-resistance butterfly-type flipping emergency disconnection device includes a main seal, a hoop disconnection device, a left housing and a right housing. The main seal is used for sealing between the left housing and the right housing. The left housing and the right housing are sealed through the main seal. The hoop disconnection device fixes the connection between the left housing and the right housing through the main seal. It is characterized in that flap seal devices are provided in both the left housing and the right housing. The flap seal device is the core component of the present invention. The special structural design of the flap seal device can ensure the flow rate while ensuring the sealing effect in an emergency.

[0007] The flap sealing device includes a locking ring, a limit ring, a support guide block, a spring, a slider one, a flap valve core assembly and a limit pin one. A strip-shaped groove and an arc-shaped chute are provided in the middle of the right side of the support guide block. The slider one is sleeved on the support guide block. The limit ring is fixedly connected to the left housing through the locking ring by threading. The support guide block is fixed to the limit ring. The spring is limited between the limit ring and the slider one. The spring always has a pre-compressive force to push the slider one to the right. The limit pin one is located in the strip-shaped groove.

[0008] The flap valve core assembly includes a slider two, a limit pin two, a baffle, a sealing ring, a pressing block and a fixing bolt. The sealing ring is fixed to the baffle by the pressing block through the fixing bolt. The limit pin two connects the slider two and the baffle. A chute one is provided on the slider two. A sliding pin is provided on the slider two. The sliding pin slides in the arc-shaped chute. The slider two is located in the strip-shaped groove. The chute one is sleeved on the limit pin one.

[0009] A limit block one is also provided in the left housing, and a limit block two is provided in the right housing. The limit block one contacts and fixes the flap valve core assembly in the right housing, and the limit block two contacts and fixes the flap valve core assembly in the left housing.

[0010] The hoop detachment device is used to lock the middle connection of the left housing and the right housing, and includes a lifting ring, a lock cover, a hoop, a top cone, a copper pin, a pull rod, a right-hand thread, a right-and-left thread sleeve, a left-hand thread, a safety bolt and a butterfly nut. The lifting ring is connected to the on-site limit piece, presses the lock cover at the other end, and is connected to the pull rod at the same time. The top cone is positioned with the hoop inclined surface. The copper pin is inserted into the top cone and the pull rod. The right-hand thread and the left-hand thread are connected to the hoop, and are connected through the right-and-left thread sleeve in the middle, and the tightness is adjusted to ensure that the left housing and the right housing are closely attached. The safety bolt is fixed to the hoop through the butterfly nut.

[0011] Preferably: In order to facilitate position fixing, the left housing and the right housing are fixed in relative positions through positioning pins.

[0012] Initial state: The flap left valve body and the flap right valve body are connected together through the hoop detachment mechanism. The positioning pins fix the relative positions of the flap left valve body and the flap right valve body. The main seal ensures no leakage between the flap left valve body and the flap right valve body. The flap valve core assembly is limited and fixed by the limit blocks, ensuring that the emergency detachment device is in the open state and maximizing the internal flow-through space of the emergency detachment device.

[0013] Disconnected state: The safety bolt and butterfly nut are removed during transportation for safety purposes and will be removed in advance during actual use. When the pipeline is transmitting the medium and encounters an emergency with a tensile load, the lifting ring will drive the lock cover, top cone, and pull rod forward under the action of the tensile force, and at the same time cut the copper pin. At this time, the hoop will be in a loose state, and the left flap valve body and the right flap valve body will be disengaged from each other. The flap valve core assembly will be disengaged from the restriction of the limit block. Under the thrust of the spring, the slider will move forward, and at the same time drive the sliding pin forward. The sliding pin will drive the flap valve core assembly forward. At the same time, the limit pin restricts the relative sliding of the chute of the flap valve core assembly. Finally, under the combined action of the limit pin and the sliding pin, the flap valve core assembly will first rotate and then move horizontally. Finally, the sealing ring in the flap valve core assembly will contact the valve body and stop to play a sealing role. At this time, the spring continuously has a force to ensure the seal.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the design of the present invention, sufficient flow rate can be ensured during use, and the loading speed can be increased by more than 2 times. In addition, through the design of the present invention, the sealing valve core of the present invention will not be washed away by the fluid, ensuring the safety of the equipment during use, and is suitable for comprehensive promotion and application, mainly applied to fluid loading. Brief Description of the Drawings

[0015] Figure 1 Internal structure diagram of the present invention;

[0016] Figure 2 Internal structure diagram of the left flap valve body of the present invention;

[0017] Figure 3 Component structure diagram of the left flap valve body of the present invention;

[0018] Figure 4 Structure diagram of the hoop detachment device of the present invention;

[0019] Figure 5 Structure diagram when the flap sealing device of the left flap valve body of the present invention is opened;

[0020] Figure 6 Structure diagram when the flap sealing device of the left flap valve body of the present invention is closed;

[0021] Figure 7 Structure diagram of the flap valve core assembly of the present invention;

[0022] Figure 8 Structure diagram of the flap sealing device of the present invention;

[0023] Figure 9 Structure diagram when the left flap valve body and the right flap valve body of the present invention are separated;

[0024] Figure 10Isometric view of the present invention. Detailed implementation mode Example 1

[0025] As Figure 1 - Figure 10 shown

[0026] A low-flow-resistance butterfly-type flip emergency release device, comprising a main seal 2, a hoop release device 4, a left housing 1.1 and a right housing 5.1. The connection between the left housing 1.1 and the right housing 5.1 is sealed by the main seal 2. The hoop release device includes a lifting ring 4.1, a lock cover 4.2, a hoop 4.3, a top cone 4.4, a copper pin 4.5, a pull rod 4.6, a right-hand thread 4.7, a right-and-left hand thread sleeve 4.8, a left-hand thread 4.9, a safety bolt 4.10 and a butterfly nut 4.11. The lifting ring 4.1 is connected to the on-site limit piece, and the other end presses the lock cover 4.2 and is simultaneously connected to the pull rod 4.6. The top cone 4.4 is positioned on the inclined surface of the hoop 4.3, and the copper pin 4.5 is inserted into the top cone 4.4 and the pull rod 4.6. The right-hand thread 4.7 and the left-hand thread 4.9 are connected to the hoop 4.3, and are connected through the right-and-left hand thread sleeve 4.8 in the middle, and the tightness is adjusted to ensure that the left housing 1.1 and the right housing 5.1 are closely attached. The safety bolt 4.10 is fixed to the hoop 4.3 through the butterfly nut 4.11. The hoop release device 4 fixes the connection between the left housing 1.1 and the right housing 5.1 through the main seal 2. It is characterized in that flap seal devices are provided in both the left housing 1.1 and the right housing 5.1. The flap seal device includes a locking ring 1.2, a limit ring 1.3, a support and guide block 1.4, a spring 1.5, a slider one 1.6, a flap valve core assembly 1.8 and a limit pin one 1.10. A strip-shaped groove 1.4.2 and an arc-shaped chute 1.4.1 are provided in the middle of the right side of the support and guide block 1.4. The slider one 1.6 is sleeved on the support and guide block 1.4. The limit ring 1.3 is fixed to the left housing 1.1 through the locking ring 1.2, and the support and guide block 1.4 is fixed to the limit ring 1.3. The spring 1.5 is limited between the limit ring 1.3 and the slider one 1.6, and the spring 1.5 always has a pre-compression force to push the slider one 1.6 to the right side. The limit pin one 1.10 is located in the strip-shaped groove 1.4.2. The flap valve core assembly 1.8 includes a slider two 1.8.1, a limit pin two 1.8.2, a baffle 1.8.3, a sealing ring 1.8.4, a pressing block 1.8.5 and a fixing bolt 1.8.6. The sealing ring 1.8.4 is fixed to the baffle 1.8.3 by the pressing block 1.8.5 through the fixing bolt 1.8.6. The limit pin two 1.8.2 connects the slider two 1.8.1 and the baffle 1.8.3. A chute one 1.8.1.1 is provided on the slider two 1.8.1. A sliding pin 1.7 is provided on the slider two 1.8.1. The sliding pin 1.7 slides in the arc-shaped chute 1.4.1. The slider two 1.8.1 is located in the strip-shaped groove 1.4.2. The chute one 1.8.1.1 is sleeved on the limit pin one 1.10. A limit block one 1.9 is further provided in the left housing 1.1, and a limit block two 5.9 is provided in the right housing 5.1. The limit block one 1.9 contacts the flap valve core assembly in the right housing 5.1 and fixes it, and the limit block two 5.9 contacts the flap valve core assembly in the left housing 1.1 and fixes it.

[0027] The left housing 1.1 and the right housing 5.1 are fixed in relative position by a positioning pin 3.

[0028] The working principle of the present invention is as follows: Initial state: The flap left valve body 1 and the flap right valve body 5 are connected together by a hoop disengaging mechanism 4. The positioning pin 3 fixes the relative position of the flap left valve body 1 and the flap right valve body 5. The main seal 2 ensures no leakage between the flap left valve body and the flap right valve body. The flap valve core assembly is limited and fixed by a limiting block to ensure that the emergency disengagement device is in an open state, maximizing the internal flow-through space of the emergency disengagement device.

[0029] Disconnected state: The disengagement safety bolt 4.10 and the butterfly nut 4.11 serve as insurance during transportation and will be removed in advance during actual use. When the pipeline is transmitting the medium and encounters an emergency and is subjected to a tensile load, the lifting ring 4.1 will drive the lock cover 4.2, the top cone 4.4, and the pull rod 4.6 to move forward under the action of the tensile force. At the same time, the copper pin 4.5 is cut off. At this time, the hoop 4.3 will be in a loose state, and at the same time, the flap left valve body 1 and the flap right valve body 5 will be disengaged relatively. The flap valve core assembly 1.8 is released from the restriction of the limiting block 5.9. Under the thrust of the spring 1.5, the slider one 1.6 will move forward, and at the same time drive the sliding pin 1.7 to move forward. The sliding pin 1.7 drives the flap valve core assembly 1.8 to move forward. At the same time, the limiting pin 1.10 restricts the relative sliding of the chute 1.8.1.1 of the flap valve core assembly 1.8. Finally, under the combined action of the limiting pin 1.10 and the sliding pin 1.7, the flap valve core assembly 1.8 first rotates and then moves horizontally, and finally the sealing ring 1.8.4 in the flap valve core assembly 1.8 contacts the flap left valve body 1 and stops, playing a sealing role. At this time, the spring 1.5 continuously has a force to ensure the seal.

[0030] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A low-flow-resistance butterfly-type flip emergency release device, comprising a main seal (2), a hoop release device (4), a left housing (1.1) and a right housing (5.1). The left housing (1.1) and the right housing (5.1) are sealed by the main seal (2). The hoop release device (4) fixes the connection between the left housing (1.1) and the right housing (5.1) through the main seal (2). It is characterized in that flap seal devices are provided in both the left housing (1.1) and the right housing (5.1). The flap seal device includes a locking ring (1.2), a limiting ring (1.3), a support and guide block (1.4), a spring (1.5), a first slider (1.6), a flap valve core assembly (1.8) and a first limiting pin (1.10). A strip-shaped groove (1.4.2) and an arc-shaped chute (1.4.1) are formed in the middle of the right side of the support and guide block (1.4). The first slider (1.6) is sleeved on the support and guide block (1.4). The limiting ring (1.3) is fixedly connected to the left housing (1.1) through the locking ring (1.2) by threading. The support and guide block (1.4) is fixed to the limiting ring (1.3). The spring (1.5) is limited between the limiting ring (1.3) and the first slider (1.6). The spring (1.5) always has a pre-compressive force to push the first slider (1.6) to the right side. The first limiting pin (1.10) is located in the strip-shaped groove (1.4.2). The flap valve core assembly (1.8) includes a second slider (1.8.1), a second limiting pin (1.8.2), a baffle (1.8.3), a sealing ring (1.8.4), a pressing block (1.8.5) and a fixing bolt (1.8.6). The sealing ring (1.8.4) is fixed to the baffle (1.8.3) by the pressing block (1.8.5) through the fixing bolt (1.8.6). The second limiting pin (1.8.2) connects the second slider (1.8.1) and the baffle (1.8.3). A first chute ( 1.8.1.1), a sliding pin (1.7) is provided on the second slider (1.8.1), the sliding pin (1.7) slides in the arc-shaped chute (1.4.1), the second slider (1.8.1) is located in the strip-shaped groove (1.4.2), and the first chute (1.8.1.1) is sleeved on the first limit pin (1.10); A first limit block (1.9) is further provided in the left housing (1.1), and a second limit block (5.9) is provided in the right housing (5.1). The first limit block (1.9) contacts and fixes the flap valve core assembly in the right housing (5.1), and the second limit block (5.9) contacts and fixes the flap valve core assembly in the left housing (1.1).

2. The low-flow-resistance butterfly-type flip emergency disconnection device according to claim 1, characterized in that, The hoop detachment device includes a lifting ring (4.1), a lock cover (4.2), a hoop (4.3), a top cone (4.4), a copper pin (4.5), a pull rod (4.6), a right-hand thread (4.7), a right-and-left thread sleeve (4.8), a left-hand thread (4.9), a safety bolt (4.10) and a butterfly nut (4.11). The lifting ring (4.1) is connected to the on-site limit piece, and the other end presses the lock cover (4.2) and is simultaneously connected to the pull rod (4.6). The top cone (4.4) is positioned on the inclined surface of the hoop (4.3). The copper pin (4.5) is inserted into the top cone (4.4) and the pull rod (4.6). The right-hand thread (4.7) and the left-hand thread (4.9) are connected to the hoop (4.3) and are connected through the right-and-left thread sleeve (4.8) in the middle, and the tightness is adjusted to ensure that the left housing (1.1) and the right housing (5.1) are closely fitted. The safety bolt (4.10) is fixed to the hoop (4.3) through the butterfly nut (4.11).

3. A low-flow-resistance butterfly-type flip-up emergency disconnection device according to claim 1, characterized in that, The left housing (1.1) and the right housing (5.1) are fixed in relative positions by a positioning pin (3).

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