Product Description

Product Description

 

 

      Steel flexible joint is also called clamp, open expansion joint, steel flexible pipe joint. Steel flexible joint is a kind of pipe connection, reliable performance, easy to install products. At low pressure, by the elastic deformation of the sealing ring, to achieve the purpose of sealing; When the pressure increases, the medium acts on the sealing ring to play the role of self-sealing, and there is a gap between the pipe ends to compensate for the displacement and deflection of the pipe caused by thermal expansion and cold contraction.

The working temperature of the clamp joint is generally -30ºC-+130ºC. The medium property is weak acid, weak alkali and lubricating oil range can be applied. If beyond the above range can also provide our company with the nature of the medium parameters or optional parameters or optional specified rubber ring material. In addition to the connection function, the joint can also provide compensation, withstand axial force, provide Angle, reduce vibration wave, adapt to the change of foundation.

The advantages of clamp joint:

1 Clamp joint has good continuity, will not produce distortion, easy to achieve the ideal laying state.
2 Clamp pipe joint in a free state, do not bear the weight of the pipe, not subjected to external shear, especially DN200 pipe diameter, more must consider the weight of the pipe.
3. It is easy to keep the coaxial position when installing the clamp joint to ensure the uneven distribution of the radial clearance between the inner diameter of the pipe clamp and the outer diameter of the pipe. The rubber ring will be deformed under high pressure due to the large local clearance, which will affect the sealing effect and even destroy the rubber ring.
4. It is suitable for the application in the subsidence zone, which can reduce the Angle between the pipe segments caused by the subsidence of the support pier.
5 is conducive to pipeline maintenance. Turn the pipe, save labor and effort when changing the pipe.
 

Detailed Photos

 

 

 

 

Product Parameters

PN1.6/2.5/4.0/6.4MPa     KRHD
 

DN(mm)	Dw(mm)	Allowable  Angle Φ	Installation  length L   (mm)	Maximal length (mm)	Fitting  bolt  d×L    (mm)
80	89	17.90	100	110	M12*60
100	108	15.06	100	110	M14*60
125	133	13.05	105	115	M14*60
150	159	12.09	110	120	M14*60
175	194	10.51	110	120	M16*60
200	219	9.33	116	126	M16*75
225	245	8.36	122	132	M16*80
250	273	7.51	127	137	M18*90
300	325	6.32	130	140	M18*100
350	377	5.45	135	145	M18*100
400	426	4.80	140	150	M18*110
450	480	4.28	145	155	M18*110
500	530	3.88	150	160	M18*120
600	630	3.27	155	165	M18*120
700	720	2.86	160	170	M20*120
800	820	2.51	165	175	M20*130
900	920	2.24	170	180	M20*130
1000	1571	2.02	175	185	M20*130
1200	1220	1.69	180	190	M22*140
1400	1420	1.45	185	195	M22*140
1600	1620	1.27	190	200	M22*140
1800	1820	1.13	195	205	M22*150
2000	2571	1.01	200	210	M24*150
2200	2571	1.01	205	215	M24*150
2400	2420	1.01	210	220	M24*150
2600	2620	1.01	215	225	M24*160
2800	2830	1.01	220	230	M27*160
3000	3571	1.01	225	230	M27*160
3200	3220	1.01	230	240	M27*180

 
Datas above are only for reference,if you want to know more details, please click here to contact us.

 

Installation Instructions

 

1. Prepare groove pipe sections, fittings and accessories that meet the requirements.

2. Check whether the rubber sealing ring is damaged and put it on the end of a steel pipe.
3. There should be a certain gap between the end and both ends of the steel pipe close to the end and both ends of the pipe which has been         covered with rubber sealing ring. The clearance shall meet the standard requirements.
4.  Put the rubber seal ring on the end of another steel pipe, make the rubber seal ring in the middle of the interface, and apply lubricant on the same side.
5. Check the axis of the pipe.
6. Install upper and lower clamps on the outer side of rubber seal-ing ring at the interface position, and clip the collar convex edge into the groove.
7. Press the upper and lower clamp ears with hand force, tighten the collar of the clamp with a wooden hammer, and tighten the upper and lower clamps tightly.
8. At the clamp screw hole position, put on the studs and tighten the nuts evenly to prevent the rubber sealing ring from wrin-kling.
9. check  and  comfirm  that  the  collar  convex  edge  is  clamped  into  the  groove.
 

products application

 

 

Company Profile

 

         HangZhou Ruixuan pipeline equipment factory was founded in 1996.It  is an excellent  enterprise  specializing  in manufacturing  and selling pipe fittings.It's located  in Xicun village ,HangZhou  city,ZheJiang province ,the concentrated  area  of pipeline equipment industry  in China.The company factory  is located  in Xicun town pipeline equipment industrial park.It covered an area of20000  square  meters.

         At present, the company has the production capacity of pipeline equipment with a maximum diameter of 4000mm, and its main products are: Steel expansion joint, flexible waterproof sleeve, large diameter flange, double flange force transfer expansion joint, large deflection loose sleeve compensation joint, spherical compensation joint, sleeve compensator, bellows compensator, non-metallic compensator, rubber expansion joint, DC medium no thrust sleeve compensator, flexible expansion pipe and other pipeline equipment. The annual production capacity is 30 million sets.

        The flexible telescopic pipe equipment is mainly used in the pipeline crossing different geological structures under different conditions and the application of pipe installation drop, reduce or avoid the impact of geological settlement and crustal activity on the pipeline, so that the construction unit can save more than 50% of the cost when purchasing the equipment. The rubber expansion joint series products of the company, the maximum production diameter of 3600mm, have been applied in millions of units of thermal power projects in China for many times, and have been praised by the users.

        The company passed ISO9001:2008 quality management system certification in 2009 and ISO14000:2004 environmental management system certification in 2009. The company has a strict quality control system, standard production process, standard factory inspection hand section, to ensure that every product meets the national standards and customer requirements.

       Business philosophy: responsible production of products, return the trust of customers; To build a community with a sense of belonging and appreciate employees' contributions; Make a contribution to the society of enterprises, give back to the good times. HangZhou Ruixuan pipeline equipment factory is willing to work with friends from all walks of life hand in hand, mutual support, create a better future!

 

Certifications

 

 

FAQ

 

Q:Can you make the product as per client's requirement?
A:Yes, we can make it with your exact requirement.

Q:What are your payment terms?
A:T/T (30% as deposit, the rest 70% will be paid before delivery), L/C at sight.

Q:Where is your nearest loading port?
A:ZheJiang , HangZhou or ZheJiang , China.

Q:How can you guarantee the quality or any warranty?
A:If any quality problems during use, all the products can be returned or according to consumer's requests.

Q:Do you accept small quantity order?
A:Of course we do.

Q:And what is your shipment and delivery time?
A:By sea or air. Normally 7 to 14 Days for delivery, according to your order quantity.

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Reducing Downtime and Maintenance Costs with Jaw Couplings

Jaw couplings play a crucial role in reducing downtime and maintenance costs in mechanical systems. Here's how they contribute to improved efficiency and cost-effectiveness:

• Shock Absorption: Jaw couplings feature an elastomeric spider between the hubs, which acts as a shock absorber. It helps dampen vibrations and shock loads, protecting connected equipment from sudden impacts. By minimizing the impact of shocks and vibrations, jaw couplings extend the lifespan of components and reduce the need for frequent repairs or replacements.
• Misalignment Compensation: In real-world applications, shaft misalignment is almost unavoidable due to factors such as temperature variations, foundation settling, or minor assembly errors. Jaw couplings can accommodate angular and parallel misalignment, reducing stress on connected equipment and minimizing wear on shafts and bearings.
• Fail-Safe Design: Jaw couplings are designed with a fail-safe feature. If the elastomeric spider fails due to wear or damage, the jaws of the coupling interlock, allowing the system to continue transmitting torque. This design prevents complete coupling failure and allows the machinery to keep running until scheduled maintenance can be performed.
• Easy Installation and Replacement: Jaw couplings are relatively easy to install and replace, which helps reduce downtime during maintenance or equipment upgrades. With simple set-screw or clamp-type hubs, the couplings can be quickly installed or removed without disassembling the entire system.
• Cost-Effectiveness: Compared to some other types of couplings, jaw couplings are generally more cost-effective. They offer reliable performance and misalignment compensation at a relatively lower cost. Additionally, the extended equipment lifespan and reduced maintenance needs contribute to long-term cost savings.

By providing shock absorption, misalignment compensation, fail-safe operation, easy installation, and cost-effectiveness, jaw couplings enhance the overall reliability and efficiency of mechanical systems, leading to reduced downtime and maintenance costs.

What are the common installation mistakes to avoid when using jaw couplings?

Proper installation of jaw couplings is crucial to ensure their reliable and efficient operation. Avoiding common installation mistakes can prevent premature wear, misalignment, and potential equipment damage. Here are some of the most common installation mistakes to avoid when using jaw couplings:

1. Incorrect Coupling Size: Using the wrong size of jaw coupling for the application can lead to various issues. Undersized couplings may not handle the required torque, leading to early failure, while oversized couplings may result in increased rotational inertia and decreased system performance. Always ensure that the selected coupling is appropriate for the torque and power requirements of the equipment.
2. Misalignment: Improper alignment of the shafts during coupling installation can cause excessive forces and premature wear on the coupling components. Angular, parallel, and axial misalignments should be minimized and kept within the manufacturer's recommended tolerances. Consider using alignment tools and techniques to achieve accurate shaft alignment.
3. Over-Tightening: Applying excessive torque when tightening the coupling elements can lead to deformation of the elastomer spider or damage to the hubs. Over-tightening can also increase friction and cause premature wear. Follow the manufacturer's specified torque values during installation to ensure proper clamping without causing damage.
4. Lack of Lubrication: Some jaw couplings require lubrication to reduce friction and wear. Neglecting to lubricate the coupling elements can lead to increased friction, higher operating temperatures, and reduced coupling life. Follow the manufacturer's guidelines regarding lubrication intervals and types of lubricants to use.
5. Failure to Inspect Components: Before installation, carefully inspect all coupling components for any signs of damage, wear, or defects. Using a damaged or worn-out elastomer spider or other components can compromise the coupling's performance and reliability. Replace any worn or damaged parts before installing the coupling.
6. Improper Shaft End Preparation: Ensure that the shaft ends are clean, smooth, and free from burrs or imperfections before installing the coupling. Rough or uneven shaft surfaces can lead to misalignment and reduce coupling performance. Properly clean and prepare the shaft ends to ensure a secure and accurate fit.
7. Not Following Manufacturer's Guidelines: Each jaw coupling has specific installation instructions provided by the manufacturer. Failure to follow these guidelines can result in coupling failure or reduced performance. Always refer to the manufacturer's installation manual and recommendations for proper installation procedures.

By avoiding these common installation mistakes, users can maximize the performance and longevity of jaw couplings in their applications. Proper installation ensures that the coupling operates efficiently, transmits power effectively, and reduces the risk of unexpected failures or downtime.

Handling Angular, Parallel, and Axial Misalignment with Jaw Couplings

Jaw couplings are designed to handle various types of misalignment that can occur between the shafts they connect. These misalignments include:

• Angular Misalignment: When the shafts are not aligned in a straight line and have an angular offset, jaw couplings can accommodate this misalignment due to the flexibility of their elastomeric spider. The spider allows for a limited amount of angular movement between the hubs, reducing stress on the connected equipment.
• Parallel Misalignment: Parallel misalignment occurs when the shafts are not perfectly aligned but are parallel to each other. Jaw couplings can handle parallel misalignment to some extent, thanks to the elastomeric spider's ability to flex and offset slight shaft misalignments.
• Axial Misalignment: Axial misalignment refers to the displacement of shafts along their rotational axis. While jaw couplings are primarily designed for torque transmission and misalignment compensation, they have limited capability to handle axial misalignment. Excessive axial misalignment can lead to premature wear and reduce the coupling's effectiveness.

It's important to note that jaw couplings have specific misalignment limits, and exceeding these limits can lead to increased wear and decreased performance. Regular maintenance and inspection of jaw couplings are essential to ensure they are operating within acceptable misalignment parameters.

editor by CX 2024-02-21