Online valve body wind line anti-drop device

Abstract

The present application relates to the field of valve body anti-drop device, and particularly relates to an online valve body air line anti-drop device, which comprises a pair of bottom plates, a pair of bolts connected between the bottom plates, and a lower limit hole formed between the bottom plates; a clamping part arranged on the bottom plate and provided with a middle limit hole at the center of the clamping part; a limiting part arranged on the clamping part and acting on the clamping part, and provided with an upper limit hole at the center of the limiting part; a tensioning part detachably connected with the limiting part at the top end; a lower connecting part detachably connected with the tensioning part at the bottom end; and the upper limit hole, the middle limit hole and the lower limit hole are coaxial. The bottom plate, the chuck and the connecting piece are adopted to reinforce the connection of the valve body, so that the problems of air source falling off, air source ball valve joint cracking, and air line joint ring and cap tearing can be prevented, and the problems of production fluctuation, device shutdown, environmental pollution and safety accidents can be prevented.

Description

Technical Field

[0001] This invention relates to the field of valve body anti-detachment devices, and more specifically to an online valve body air line anti-detachment device. Background Technology

[0002] Pneumatic control valves are a crucial component of automated systems, often referred to as the "hands and feet" of automation in the production process. If a control valve malfunctions and is not addressed promptly, it can cause anything from production fluctuations to complete plant shutdowns. The resulting economic losses, environmental pollution, and safety incidents are incalculable. In recent years, incidents of control valve air lines detaching have occurred frequently.

[0003] For example, the PV51504 air line of the fuel gas pressure control valve in the atmospheric and vacuum distillation unit caused abnormal process operation due to excessive vibration frequency. Summary of the Invention

[0004] This invention provides an online valve body air line anti-disconnection device, which solves the problem of production accidents caused by abnormal valve body air lines and realizes the reinforcement of valve body joints to avoid accidents caused by air supply interruption.

[0005] The technical problem solved by this invention can be achieved by the following technical solutions:

[0006] An online valve body air line anti-detachment device includes:

[0007] A pair of chassis, a pair of bolts connecting the two chassis, and a lower limit hole between the two chassis;

[0008] The clamping part is mounted on the chassis and has a center limit hole at its center.

[0009] A limiting part is provided on the clamping part and acts on the clamping part, and an upper limit hole is provided at the center of the limiting part;

[0010] A tensioning part, the top of which is detachably connected to a limiting part;

[0011] The lower connecting part is detachably connected to the bottom end of the tensioning part;

[0012] The upper limit hole, middle limit hole, and lower limit hole are coaxial.

[0013] Furthermore, the clamping part includes at least one pair of chucks with identical structures, a bolt connecting the pair of chucks, a central annular opening on the contact surface of each pair of chucks, a raised inclined surface on the central annular opening of each chuck, the central annular openings of the pair of chucks joining together to form a central limiting hole, and the inclined surfaces of the pair of chucks joining together to form a trapezoidal frustum structure, with the limiting part acting on the inclined surface of the chuck.

[0014] Furthermore, the limiting part includes a pair of limiting seats with identical structures, a bolt connecting the pair of limiting seats, an upper annular opening on the contact surface of each pair of limiting seats, the upper annular openings of the pair of limiting seats joining together to form an upper limiting hole, an inclined surface inside the upper annular opening, and the inclined surface of the upper annular opening being smaller than the inclined surface angle of the chuck, the inclined surface of the pair of limiting seats acting on the inclined surface of the pair of chucks.

[0015] Furthermore, the tensioning part includes a pair of pull plates and a pair of nuts. One end of the pair of pull plates has a limiting protrusion. One end of the pair of pull plates is respectively inserted into both sides of the lower connecting part. The opposite surfaces of the two sides of the pair of limiting seats have slots respectively. The other ends of the pair of pull plates pass through the slots respectively. The other end of the pull plate has a thread. The nut is threadedly connected to the pull plate, and the nut acts on the limiting seat and the pull plate.

[0016] Furthermore, the upper surface of the limiting seat has stabilizing protrusions on both sides of the slot, and the stabilizing protrusions are located inside the nut.

[0017] Furthermore, the tensioning part is a clamping plate, and there are insertion holes on both sides of the clamping plate. A limit slot is opened on the lower surface of the insertion hole. One end of the pull plate passes through the insertion hole so that the limit protrusion is inserted into the limit slot.

[0018] Furthermore, the lower connecting part includes a pair of connectors with identical structures. The pair of connectors are connected by bolts, and each of the pair of connectors has a lower annular opening at its contact center. The lower annular openings of the pair of connectors form a lower limiting hole. Each of the pair of connectors has an insertion hole, and the lower surface of the insertion hole has a limiting slot. One end of the pull plate passes through the insertion hole so that the limiting protrusion is inserted into the limiting slot.

[0019] The beneficial effects of this invention are: by using the annular opening of the chuck to clamp the pipe wall, the problem of expansion at the pipe wall connection is effectively solved. At the same time, by changing the chuck with different sizes of annular openings, pipes of different sizes can be clamped, thereby reducing replacement costs and thus preventing radial expansion deformation of the pipe.

[0020] Because of the use of a pull plate, the limit seat and the connecting parts can be restricted to prevent radial torsion when connected. At the same time, by tightening the limit seat and the connecting parts by the pull plate, the upper and lower connecting pipes of the valve body are subjected to axial force, thereby preventing the connection from being ejected and separated by internal pressure.

[0021] By using a chassis, chuck, and connectors to reinforce the valve body connections, problems such as air source union detachment, air source ball valve joint cracking, and air line connector pressure ring and cap tearing can be prevented, thereby preventing production fluctuations, plant shutdowns, environmental pollution, and safety accidents. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the structure of the present invention.

[0024] Figure 2 This is a top view of the present invention.

[0025] Figure 3 This is a schematic diagram of the chuck structure of the present invention.

[0026] In the diagram: 1-chassis; 2-chuck; 3-limit seat; 4-pull plate; 5-nut; 6-stabilizing protrusion; 8-limiting protrusion; 9-connector. Detailed Implementation

[0027] Example 1:

[0028] Reference Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention, an online valve body air line anti-detachment device, characterized in that it includes:

[0029] A pair of chassis 1, a pair of bolts connecting the pair of chassis 1, and a lower limit hole between the pair of chassis 1;

[0030] The clamping part is provided on the chassis 1, and a center limit hole is provided at the center of the clamping part;

[0031] A limiting part is provided on the clamping part and acts on the clamping part, and an upper limit hole is provided at the center of the limiting part;

[0032] A tensioning part, the top of which is detachably connected to a limiting part;

[0033] The lower connecting part is detachably connected to the bottom end of the tensioning part;

[0034] The upper limit hole, middle limit hole, and lower limit hole are coaxial.

[0035] In actual use: First, select a pneumatic control valve. Connect the base plate 1 to the outer wall of the top pipe of the control valve with bolts. Tighten the bolts to perform a first clamping. Then, place the clamping part on the base plate 1 so that the clamping part wraps around the pipe wall. Then, place the limiting part on the clamping part, and at the same time, the pipe passes through the upper limit hole of the limiting part. Then, install the lower connection part on the bottom of the control valve. Then, connect the limiting part and the lower connection part through the tensioning part. By adjusting the tensioning part, the limiting part acts on the clamping part, and a second clamping is performed through the clamping part. Through the radial clamping of the base plate 1 and the clamping part and the axial tensioning of the lower connection part in conjunction with the tensioning part, the pipe at the top of the control valve is stably connected to the control valve.

[0036] Example 2:

[0037] Reference Figure 1-3 The difference in this embodiment is that: the clamping part includes at least one pair of chucks 2 with the same structure, the pair of chucks 2 are connected by bolts, the contact surfaces of the pair of chucks 2 each have a central annular opening, the central annular opening of the chuck 2 has a raised inclined surface, the central annular openings of the pair of chucks 2 are joined together to form a central limiting hole, the inclined surfaces of the pair of chucks 2 are joined together to form a trapezoidal frustum structure, and the limiting part acts on the inclined surface of the chuck 2.

[0038] The limiting part includes a pair of limiting seats 3 with identical structures. The pair of limiting seats 3 are connected by bolts. The contact surfaces of the pair of limiting seats 3 are each opened with an upper annular opening. The upper annular openings of the pair of limiting seats 3 are joined together to form an upper limiting hole. An inclined surface is opened in the upper annular opening, and the inclined surface of the upper annular opening is smaller than the inclined surface angle of the chuck 2. The inclined surface of the pair of limiting seats 3 acts on the inclined surface of the pair of chucks 2.

[0039] In actual use: Place a pair of chucks 2 on the upper surface of the base plate 1, so that the inner arc surface of the annular opening of the chuck 2 contacts the pipe, and at the same time, the convex inclined surface of the chuck 2 faces upward. Then connect the limit seat 3 with bolts, so that the limit hole is sleeved on the outside of the pipe. Then lower the limit seat 3 so that the inclined surface of the pair of limit seats 3 is sleeved on the convex inclined surface of the chuck 2 and fits with it. When the tensioning part pulls the two sides of the limit seat 3, the limit seat 3 moves downward under the action of the tensioning part. At the same time, the inclined surface of the limit seat 3 is squeezed inward by the inclined surface of the limit seat 3, squeezing and clamping the pipe wall, so that the pipe receives uniform radial compression. At the same time, the axial tensioning part tightens the lower connection part, so that the pipe can be tightened axially, preventing the pipe from popping out under the action of internal pressure at the connection of the regulating valve.

[0040] By replacing the chuck 2 with different sizes of central annular openings, pipe walls of different sizes can be clamped, reducing replacement costs, and better fitting can be achieved for different irregular pipe walls.

[0041] In this implementation, there can be three or more chucks 2.

[0042] Example 3:

[0043] Reference Figure 1 The difference in this embodiment is that the tensioning part includes a pair of pull plates 4 and a pair of nuts 5. One end of the pair of pull plates 4 has a limiting protrusion 8. One end of the pair of pull plates 4 is respectively inserted into both sides of the lower connecting part. The opposite surfaces of the pair of limiting seats 3 have slots respectively. The other end of the pair of pull plates 4 passes through the slots respectively. The other end of the pull plate 4 has a thread. The nut 5 is threadedly connected to the pull plate 4, and the nut 5 acts on the limiting seat 3 and the pull plate 4.

[0044] In actual use: First, connect the lower connecting part to the pipe at the bottom of the regulating valve. Then, insert the pull plate 4 into the lower connecting part. Next, insert the pull plate 4 from below the limit seat 3 to above it. Then, connect the pull plate 4 to the nut 5 through the thread. By tightening the nut, the lower connecting seat and the limit seat 3 are subjected to force. The limit seat 3, under the action of the inclined surface, causes the chuck 2 to radially clamp the pipe wall. At the same time, under the axial tension of the pull plate 4, the upper and lower ends of the regulating valve are subjected to force simultaneously. This tightens and reinforces the connection at both ends of the pneumatic regulating valve, preventing the joint from falling off.

[0045] Example 4:

[0046] Reference Figure 2 The difference in this embodiment is that: the upper surface of the limiting seat 3 has stabilizing protrusions 6 on both sides of the slot, and the stabilizing protrusions 6 are located inside the nut 5.

[0047] In actual use: The stabilizing protrusion can stabilize the nut 5. Since the connection area between the nut 5 and the pull plate 4 is small, there is an arc-shaped cavity between the two sides of the pull plate 4 and the nut 5. The stabilizing protrusion 6 fills the cavity, so that the nut 5 and the pull plate 4 are connected and stabilized, reducing the nut 5 from tilting and reducing uneven force when the nut 5 and the pull plate 4 are connected.

[0048] Example 5:

[0049] The difference in this embodiment is that the tensioning part is a card plate, and there are insertion holes on both sides of the card plate. A limit slot is opened on the lower surface of the insertion hole. One end of the pull plate 4 passes through the insertion hole so that the limit protrusion 8 is inserted into the limit slot.

[0050] In actual use: When applying to other pneumatically controlled valve bodies, some valve bodies do not have pipeline connections at the bottom. A clamping plate is used to hold the bottom of the valve body to ensure that the pull plate 4 can properly tighten the limit seat 3 at the top of the valve body.

[0051] Example 6:

[0052] Reference Figure 1 The difference in this embodiment is that: the lower connecting part includes a pair of connectors 9 with the same structure, the pair of connectors 9 are connected by bolts, and the lower annular openings of the pair of connectors 9 are respectively opened at the contact center, the lower annular openings of the pair of connectors 9 form a lower limiting hole, the pair of connectors 9 are respectively opened with insertion holes, the lower surface of the insertion hole is opened with a limiting slot, and one end of the pull plate 4 passes through the insertion hole to allow the limiting protrusion 8 to be inserted into the limiting slot.

[0053] In actual use: Connect the connector 9 with bolts so that a pair of connectors 9 are fitted onto the outer wall of the lower connecting pipe of the regulating valve. Then tighten the bolts to clamp the pair of connectors 9 tightly to the outside of the pipe wall. Then insert the pull plate 4 from below the connector 9 into the socket and pass through the socket. Then connect it to the limit seat 3. The pull plate 4 is embedded into the limit slot through the limit protrusion 8 to complete the limitation. At the same time, the limit protrusion 8 prevents the bottom end of the pull plate 4 from passing through the connector 9.

[0054] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention, and all such changes are within the protection scope of the technology.

Claims

1. An online valve body air line anti-detachment device, characterized in that, include: A pair of chassis (1), a pair of bolts connecting the pair of chassis (1), and a lower limit hole is opened between the pair of chassis (1). The chassis (1) is radially clamped to the outer wall of the top tube of the valve body by tightening the bolts. The clamping part is provided on the chassis (1), and a center limit hole is provided at the center of the clamping part; The limiting part is provided on the clamping part and acts on the clamping part. The limiting part has an upper limit hole at its center. The limiting part acts on the clamping part to drive the clamping part to achieve secondary radial clamping of the pipe wall. A tensioning part, the top of which is detachably connected to a limiting part, the tensioning part restricting radial torsion between the limiting part and the lower connecting part; The lower connecting part is detachably connected to the bottom end of the tensioning part and is installed at the bottom of the regulating valve. The upper limit hole, middle limit hole, and lower limit hole are coaxial; The primary radial clamping of the chassis (1), the secondary radial clamping of the clamping part, and the axial tensioning of the connecting part under the cooperation of the tensioning part work together to act on the connecting part of the valve body air line; The clamping part includes at least one pair of chucks (2) with the same structure. A bolt is connected between the pair of chucks (2). The contact surfaces of the pair of chucks (2) are each opened with a central annular opening. The central annular opening of the chuck (2) is opened with a raised inclined surface. The central annular openings of the pair of chucks (2) are joined together to form a central limiting hole. The inclined surfaces of the pair of chucks (2) are joined together to form a trapezoidal frustum structure. The limiting part acts on the inclined surface of the chuck (2). The limiting part includes a pair of limiting seats (3) with the same structure. The pair of limiting seats (3) are connected by bolts. The contact surfaces of the pair of limiting seats (3) are all opened with an upper annular opening. The upper annular openings of the pair of limiting seats (3) are joined to form an upper limiting hole. The upper annular opening has a slope, and the slope of the upper annular opening is smaller than the slope angle of the chuck (2). The slope of the pair of limiting seats (3) acts on the slope of the pair of chucks (2). When the limiting seat is subjected to the downward force of the tensioning part, the inclined surface cooperates with the inclined surface of the chuck to make the chuck move inward and form a uniform radial compression on the pipe wall. The tensioning part includes a pair of pull plates (4) and a pair of nuts (5). One end of the pair of pull plates (4) has a limiting protrusion (8). One end of the pair of pull plates (4) is respectively inserted into both sides of the lower connecting part. The opposite sides of the pair of limiting seats (3) have slots respectively. The other end of the pair of pull plates (4) passes through the slots respectively. The other end of the pull plates (4) has threads. The nuts (5) are threadedly connected to the pull plates (4), and the nuts (5) act on the limiting seats (3) and the pull plates (4).

2. The online valve body air line anti-detachment device according to claim 1, characterized in that, The upper surface of the limiting seat (3) has stabilizing protrusions (6) on both sides of the slot, and the stabilizing protrusions (6) are located inside the nut (5).

3. The online valve body air line anti-detachment device according to claim 1, characterized in that, The tensioning part is a clamping plate (7), and there are insertion holes on both sides of the clamping plate (7). A limit slot is opened on the lower surface of the insertion hole. One end of the pull plate (4) passes through the insertion hole so that the limit protrusion (8) is inserted into the limit slot.

4. The online valve body air line anti-detachment device according to claim 1, characterized in that, The lower connecting part includes a pair of connectors (9) with the same structure. The pair of connectors (9) are connected by bolts, and the pair of connectors (9) have lower annular openings at their contact centers. The lower annular openings of the pair of connectors (9) form lower limiting holes. The pair of connectors (9) have insertion holes, and the lower surface of the insertion holes has limiting slots. One end of the pull plate (4) passes through the insertion hole so that the limiting protrusion (8) is inserted into the limiting slot.

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