Suspension type elastic supporting device of instrument valve executing mechanism

Abstract

The invention discloses a suspension type elastic supporting device which is mainly composed of a spring hanger, a door-shaped support and a detachable pipe clamp and is characterized in that the spring hanger, the door-shaped support and the detachable pipe clamp are connected into a whole from top to bottom, the door-shaped support is a load-bearing supporting component and is composed of a vertical beam and a cross beam, and the vertical beam is connected with the cross beam. The lower ends of the vertical beams are fixedly connected with the detachable pipe clamps respectively, and the upper ends of the vertical beams are connected with the bottom face of the cross beam. The device can be used for additionally supporting the instrument valve executing mechanism, and the overall stability of the valve body and the executing mechanism is improved. And the detachable pipe clamp is adopted, so that the executing mechanism can be conveniently inspected and maintained. The torque generated by the weight of the executing mechanism on the valve body flange can be effectively reduced, and the flange leakage risk is reduced; by arranging the spring hanging bracket, thermal expansion displacement of the valve body and the pipeline where the valve body is located in the horizontal direction and the vertical direction can be allowed, and the flexibility and operation safety of the pipeline are guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of petrochemical engineering, and particularly relates to a support hanger device for an instrument valve actuator. Background Art

[0002] There are a large number of pneumatic instrument valves in petrochemical plants, mainly including two categories: pneumatic control valves and pneumatic shut-off valves. Pneumatic actuators are divided into diaphragm type and piston type, and the piston type is divided into two forms: with spring and without spring. Among them, the piston type pneumatic actuator with spring is relatively complex, and the sizes and weights of the spring end and the cylinder end of this actuator are often relatively large. Especially in high-pressure hydrogenation plants, the size of the actuator of the high-pressure pneumatic shut-off valve far exceeds the size of the instrument valve body, and its total length can reach up to 2 - 3 meters, and the weight of the actuator is also greater than that of the instrument valve body. An oversized or overweight actuator will have an adverse impact on the safe operation of the valve body and pipelines.

[0003] On the one hand, when the instrument valve body is installed on a horizontal pipeline and its actuator is installed vertically, its center of gravity is much higher than the valve body itself. Due to its long length and large weight, when the valve body undergoes thermal expansion displacement along with the pipeline, it is bound to cause the center of gravity of the actuator to be unstable, resulting in overall shaking, which poses a threat to the safe operation of the valve and pipelines; on the other hand, when the weight of the actuator is large, it will generate a large bending moment on the flange of the valve body, thereby increasing the risk of flange leakage. Therefore, there is an urgent need for a support device that can be used for the instrument valve actuator. Summary of the Invention

[0004] The present invention provides a suspended elastic support device, which can provide load support for the actuator, increase the stability of the actuator, and at the same time reduce the torque acting on the valve body flange; the use of a spring hanger allows the actuator to have displacements in the horizontal and vertical directions and does not restrict the thermal expansion displacement of the valve body and the connected pipelines. Thus, the technical problems existing in the prior art are solved.

[0005] To achieve the above object, the technical solution of the present invention is as follows:

[0006] A suspended elastic support device mainly consists of a spring hanger, a portal frame, and a detachable pipe clamp. It is characterized in that: the spring hanger, the portal frame, and the detachable pipe clamp are connected into a whole from top to bottom. The portal frame is a load-bearing support component, which consists of vertical beams and a cross beam. The lower ends of the vertical beams are respectively fixedly connected to the detachable pipe clamp, and the upper ends of the vertical beams are connected to the bottom surface of the cross beam.

[0007] The suspended elastic support device of the present invention is further characterized in that: the detachable pipe clamp is of a two-piece type, and the pipe clamp is fixed to the outer edges of the cylinders at the spring end and the cylinder end of the actuator through bolts and nuts.

[0008] A suspension type elastic support device of the present invention is further characterized in that: the portal bracket is a load-bearing support component, which is composed of two vertical beams and one cross beam, and is arranged in a "portal" shape as a whole. The lower ends of the vertical beams are respectively connected to detachable pipe clamps, and the upper ends are connected to the bottom surface of the cross beam.

[0009] Preferably, both of the two vertical beams are single beams, and the cross beam is a double beam, with a gap left in the middle of the double beam for the suspension rod to pass through.

[0010] Preferably, the double beams of the cross beam are channel steels, and the webs of the two channel steels face each other, presenting an "I" shape.

[0011] Preferably, three steel plates are arranged on the upper surface of the double beams, respectively located in the middle and at both ends of the cross beam, for combining the double beams into a whole, increasing its strength and load-bearing capacity.

[0012] A suspension type elastic support device of the present invention is further characterized in that: the spring hanger is composed of a hanging plate, a spring box body, a suspension rod, an adjustable flower basket nut, and a suspension rod nut.

[0013] Preferably, the hanging plate is rooted on the bottom surface of the structural beam, and the lower part of the hanging plate is connected to the spring box body.

[0014] Preferably, the suspension rod is divided into two sections, and a flower basket nut is arranged in the middle of both ends for adjusting the installation height.

[0015] Preferably, the lower end of the suspension rod passes through the gap in the middle of the cross beam of the portal bracket. At the position where the suspension rod passes through the portal bracket, connecting steel plates are respectively arranged on the upper and lower surfaces of the cross beam, and holes are opened in the steel plates to allow the suspension rod to pass through. The suspension rod is welded by fillet weld at the hole opened in the steel plate on the upper surface of the steel beam. The suspension rod nut is located below the steel plate on the lower surface of the cross beam, and the screw rod is fixed to the cross beam by tightening the nut.

[0016] The beneficial effects of the present invention are as follows:

[0017] (1) This suspension type elastic support device can be used for additional support of the instrument valve actuator, increasing the overall stability of the valve body and the actuator. The detachable pipe clamp is adopted, which is convenient for the inspection, repair and maintenance work of the actuator.

[0018] (2) This suspension type elastic support device can effectively reduce the torque generated by the weight of the actuator on the valve body flange, reducing the risk of flange leakage; by setting the spring hanger, the thermal expansion displacement of the valve body and the pipeline in both horizontal and vertical directions can be allowed, ensuring the flexibility of the pipeline and the operation safety.

[0019] (3) This suspension type elastic support device has the advantages of simple structure, convenient maintenance, strong practicability, easy implementation, wide application range, etc. Description of the Drawings

[0020] Figure 1 This is a schematic structural diagram of a suspension-type elastic support device for an actuator of an instrument valve according to the present invention;

[0021] Figure 2 For the present invention Figure 1 A-A sectional view;

[0022] Figure 3 For the present invention Figure 1 B-B sectional view;

[0023] Figure 4 For the present invention Figure 1 C-C sectional view.

[0024] The reference numerals shown in the figure are: 10 - instrument valve body, 11 - actuator spring end, 12 - actuator cylinder end; 20 - spring box body, 21 - suspension plate, 22 - turnbuckle, 23 - suspension rod, 24 - suspension rod nut; 30 - cross beam of portal bracket; 31 - connecting steel plate, 311 - connecting steel plate with an opening in the middle, 32 - vertical beam of portal bracket, 33 - detachable pipe clamp, 331 - bolt, 332 - nut. Detailed implementation manners

[0025] The implementation of the technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0026] As Figures 1 to 4 shown, a suspension-type elastic support device for an actuator of an instrument valve is composed of a spring bracket component, a portal bracket component, and a detachable pipe clamp 33. The instrument valve body 10 includes an actuator spring end 11 and an actuator cylinder end 12.

[0027] The spring bracket is composed of a spring box body 20, a suspension plate 21, a turnbuckle 22, a suspension rod 23, and a suspension rod nut 24; the portal bracket is composed of a cross beam 30, a connecting steel plate 31, and a vertical beam 32; the detachable pipe clamp 33 is of a two-piece type and is made of two semi-circular flat steels, on which bolts 331 and nuts 332 are provided for fixing the detachable pipe clamp 33 on the outer periphery of the cylinders of the instrument valve spring end 11 and the cylinder end 12.

[0028] As Figure 2 shown, the detachable pipe clamp 33 is divided into upper and lower parts. The upper part is welded to the vertical beam 32, and the upper and lower parts of the detachable pipe clamp 33 are fastened together by bolts 331 and nuts 332 and fixed on the outer periphery of the cylinders of the instrument valve spring end 11 and the cylinder end 12.

[0029] As Figure 3 and Figure 4As shown in the figure, the crossbeam 30 of the gantry support is composed of two channel steels with opposite webs. There is a gap between the two channel steels for the spring hanger rod 23 to pass through. The hanger rod 23 passes through the connecting steel plate 311 with an opening in the middle of the gantry support. The outer edge of the hanger rod 23 is welded to the top surface of the connecting steel plate 311 located above the crossbeam 30 by fillet welds. The end of the hanger rod 23 is fixed by the hanger rod nut 24. Two connecting steel plates 31 are respectively welded to both ends of the top surface of the crossbeam 30 of the gantry support. Two connecting steel plates 311 are respectively welded to the top surface and the bottom surface of the crossbeam 30 of the gantry support, respectively, to increase the overall stiffness of the crossbeam 30. The lower ends of the two vertical beams 32 of the gantry support are respectively welded and fixed to the detachable pipe clamp 33, and the upper ends of the vertical beams 32 are welded to the bottom surface of the crossbeam 30.

[0030] The spring hanger, the gantry support and the detachable pipe clamp are connected into a whole from top to bottom to support the actuator of the instrument valve. This support device can increase the stability of the valve body and the actuator, reduce the bending moment of the actuator on the valve body flange, and reduce the risk of flange leakage. At the same time, it allows the valve body and the pipeline where it is located to displace in both horizontal and vertical directions, which can effectively improve the safety and stability of the instrument valve and the pipeline where it is located.

[0031] The above are only typical embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle described in the present invention, several improvements or replacements can be made, and these improvements or replacements should also be regarded as the protection scope of the present invention.

Claims

1. A suspension type elastic support device, mainly composed of a spring hanger, a portal bracket, and a detachable pipe clamp, characterized in that: The spring hanger, the portal support and the detachable pipe clamp are connected into a whole from top to bottom. The portal support is a load-bearing support component, which consists of vertical beams and a cross beam. The lower ends of the vertical beams are respectively fixedly connected with the detachable pipe clamp, and the upper ends of the vertical beams are connected to the bottom surface of the cross beam.

2. The suspension type elastic support device according to claim 1, characterized in that: The detachable pipe clamp is of two-piece type, and the pipe clamp is fixed on the outer edges of the spring end and the cylinder end of the actuator through bolts and nuts.

3. The suspension type elastic support device according to claim 1, wherein: The portal support is a load-bearing support component, which consists of 2 vertical beams and 1 cross beam, and is arranged in a "door" shape as a whole. The lower ends of the vertical beams are respectively connected with the detachable pipe clamp, and the upper ends are connected to the bottom surface of the cross beam.

4. The suspension type elastic support device according to claim 3, characterized in that: The 2 vertical beams are both single beams, and the cross beam is a double beam, with a gap left in the middle of the double beam for the hanger rod to pass through.

5. The suspension type elastic support device according to claim 4, characterized in that: The double beams of the cross beam are channel steels, and the webs of the two channel steels face each other, presenting an "I" shape.

6. The suspension type elastic support device according to claim 1, characterized in that: The spring hanger consists of a hanging plate, a spring box body, a hanger rod, an adjustable flower basket nut and a hanger rod nut.

7. The suspension type elastic support device according to claim 6, characterized in that: The lower part of the hanging plate is connected with the spring box body.

8. The suspension type elastic support device according to claim 6, characterized in that: The hanger rod is divided into two sections, and a flower basket nut is arranged in the middle of both ends for adjusting the installation height.

9. The suspension type elastic support device according to claim 6, wherein: The lower end of the hanger rod passes through the gap in the middle of the cross beam of the portal support. At the position where the hanger rod passes through the portal support, connecting steel plates are respectively arranged on the upper and lower surfaces of the cross beam, and holes are opened in the steel plates to allow the hanger rod to pass through.

10. The suspension type elastic support device according to claim 9, characterized in that: The hanger rod is welded with fillet welds at the hole opening of the steel plate on the upper surface of the steel beam. The hanger rod nut is located below the steel plate on the lower surface of the cross beam, and the screw rod is fixed to the cross beam by tightening the nut.

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