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JDH large pull rod transverse ripple compensator
Product Introduction: The JDH transverse large pull rod type corrugated compensator consists of two corrugated pipes, a long middle connecting pipe, a
Product details
Product Introduction
The JDH transverse large pull rod type corrugated compensator consists of two corrugated pipes, a long middle connecting pipe, and a large pull rod, which can attract lateral displacement in any plane of the pipe system. The spherical nut on the large pull rod rotates around the spherical washer during displacement, and the large pull rod also has the ability to withstand internal pressure thrust.
The expansion joint is a flexible component composed of two corrugated pipes with the same geometric parameters and wave numbers connected by an intermediate pipe, as well as a tension rod and an end plate. Mainly used to compensate for lateral displacement of curved pipe sections in single or multiple planes. Suitable for 'L' and 'Z' type piping systems. Due to the ability of the pull rod to withstand pressure thrust and other additional external forces, the expansion joint absorbs internal pressure thrust and does not generate external forces on the pipeline. Therefore, intermediate fixed brackets or guide brackets can be used for the pipelines at both ends of the expansion joint to reduce construction costs and improve construction efficiency.
The transverse large pull rod corrugated expansion joint produced by our company adopts high American EJMA standard optimized design, which has the characteristics of good flexibility, corrosion resistance, high temperature resistance, wear resistance, and long fatigue life. It can absorb axial, transverse, and angular displacement of pipelines. We have provided supporting services for key industries such as large cement plants, steel mills, power plants, and chemical plants both domestically and internationally, ensuring stable and reliable product quality.
Product advantages
The compensator consists of a connecting pipe, two corrugated pipes, and a large pull rod. The spherical nut rotates around the spherical washer, while the pull rod also has the ability to withstand internal pressure thrust. The compensator consists of two corrugated pipes, a long middle connecting pipe, and a large pull rod, which can absorb the lateral displacement of the piping system. The product is suitable for transporting media such as seawater, fresh water, hot and cold water, drinking water, domestic sewage, crude oil, fuel oil, lubricating oil, finished oil, air, coal gas, steam and granular powder with a temperature not exceeding 250 degrees. Can achieve lateral and angular displacement of pipelines. Capable of absorbing the internal pressure thrust of pipelines. Stable operation and long service life.
Product Features
Calculation of the force exerted on the support by the large pull rod transverse corrugated compensator:
Lateral elasticity: Fy=Ky · Y Bending moment: M=Fy · L
In the formula: Ky lateral stiffness N/mm Y actual lateral displacement (deformation) mm
The distance m from the L-pipe rack to the midpoint of the compensator.
Application example (without considering the correction of compensation amount and stiffness by temperature)
A certain carbon steel pipeline with a nominal diameter of 500mm, a working pressure of 0.6MPa, a medium temperature of 350 ℃, an ambient minimum temperature of -10 ℃, and a compensator installation temperature of 20 ℃. According to the pipeline layout (as shown in the figure), a large pull rod transverse compensator needs to be installed to compensate for the 160mm lateral displacement of the AB pipe section. The number of fatigue failures of the compensator is considered to be 15000 times, and the force on the support AC is calculated.
Solution: (1) According to the lateral displacement of AB pipe section
Y=160mm， 0.6DLB500-FB-2000 can be selected for sample inspection, with a lateral compensation of Y0=193mm and a lateral stiffness of Ky=22N/mm
(2) Calculation of stress on supports A and C
When calculating, consider cold tightness and take half of the actual compensation amount, which is 1/2Y. FA=Ky · 160/2=22 × 80=1760 (N) MA=FA × 2=1760 × 2=3520 (N · m)
FB=Ky · 160/2=22 × 80=1760 (N) MB=FB × 2=1760 × 2=3520 (N · m)
Namely: A and C supports respectively bear a thrust of 1760 Newton and a force distance of 3520 Newton meters.
Product Performance
Composed of two corrugated pipes connected by a middle pipe, as well as structural components such as tension rods, end plates, and spherical and conical washers, it mainly absorbs lateral displacement and can also be used to compensate for axial, lateral, angular, and any direction of displacement synthesized from these three forms. It is recommended to install a compound pull rod type expansion joint in the middle short pipe arm of a 90 ° Z-shaped pipeline to compensate for the axial displacement of the long pipeline at both ends.
Lateral displacement refers to the relative displacement in the vertical direction between one end and the other end of a corrugated pipe. Single type corrugated pipes can have lateral displacement, but the displacement is very small. A good solution is to use a composite corrugated pipe as shown in Figure 2. The result is an increase in lateral displacement compensation and a decrease in applied force.
Application scope of transverse large pull rod corrugated pipe expansion joint: mainly used in "L" and "Z" type pipe systems:
classic case
Product schematic diagram
Component materials
| number | name | quantity |
| 1 | corrugated tube | 2 |
| 2 | pipe nipple | 2 |
| 3 | Limit rod | n |
| 4 | bolt | n |
| 5 | nut | 4n |
| 6 | Middle pipe | 1 |
Technical Parameter
|
Nominal diameter DNmm |
wave number |
Pressure rating Mpa |
Lateral compensation amount mm/stiffness N/mm |
Maximum outer diameter size mm |
|||||
|
Product length mm |
|||||||||
|
1200 |
1500 |
2000 |
2500 |
3000 |
3500 |
||||
|
100 |
4+4 |
0.25 |
177/2.2 |
243/1.2 |
354/0.6 |
465/0.3 |
|
|
310 |
|
0.6 |
177/2.2 |
243/1.2 |
341/0.6 |
447/0.3 |
|
|
310 |
||
|
1 |
163/2.2 |
243/1.2 |
325/0.6 |
427/0.3 |
|
|
310 |
||
|
1.6 |
91/4 |
127/2 |
187/1 |
247/0.6 |
|
|
310 |
||
|
2.5 |
94/8 |
132/5 |
194/2 |
256/1 |
|
|
310 |
||
|
125 |
4+4 |
0.25 |
181/2.8 |
251/1.5 |
369/0.7 |
487/0.4 |
|
|
360 |
|
0.6 |
172/2.8 |
239/1.5 |
351/0.7 |
463/0.4 |
|
|
360 |
||
|
1 |
161/2.8 |
224/1.5 |
330/0.7 |
435/0.4 |
|
|
360 |
||
|
1.6 |
99/11 |
140/6 |
209/3 |
277/2 |
|
|
360 |
||
|
2.5 |
94/11 |
113/6 |
197/3 |
262/2 |
|
|
360 |
||
|
150 |
4+4 |
0.25 |
199/6 |
278/3.2 |
410/1.6 |
542/1.0 |
|
|
410 |
|
0.6 |
186/6 |
259/3.2 |
382/1.6 |
506/1.0 |
|
|
410 |
||
|
1 |
122/10 |
170/6 |
251/3 |
332/2 |
|
|
410 |
||
|
1.6 |
108/12 |
153/6 |
230/3 |
307/2 |
|
|
410 |
||
|
2.5 |
82/22 |
117/12 |
176/5 |
234/2 |
|
|
410 |
||
|
200 |
4+4 |
0.25 |
155/9.4 |
220/4.9 |
327/2.25 |
435/1.4 |
|
|
480 |
|
0.6 |
138/9.4 |
196/4.9 |
291/2.25 |
388/1.0 |
|
|
480 |
||
|
1 |
101/20 |
143/11 |
213/5 |
283/3 |
|
|
480 |
||
|
1.6 |
75/42 |
108/21 |
164/10 |
220/6 |
|
|
480 |
||
|
2.5 |
59/69 |
86/35 |
130/16 |
176/9 |
|
|
480 |
||
|
250 |
4+4 |
0.25 |
164/10.2 |
239/5.1 |
367/2.4 |
494/1.5 |
|
|
580 |
|
0.6 |
128/21 |
188/10 |
287/5 |
387/3 |
|
|
580 |
||
|
1 |
109/35 |
159/18 |
243/8 |
328/5 |
|
|
580 |
||
|
1.6 |
76/68 |
116/33 |
182/14 |
249/8 |
|
|
580 |
||
|
2.5 |
64/122 |
98/58 |
154/25 |
210/14 |
|
|
580 |
||
|
300 |
4+4 |
0.25 |
144/17.6 |
174/8.4 |
287/3.7 |
379/2 |
|
|
660 |
|
0.6 |
94/50 |
144/24 |
228/0 |
313/6 |
|
|
660 |
||
|
1 |
|
127/39 |
202/17 |
227/10 |
325/6 |
|
660 |
||
|
1.6 |
|
169/28 |
169/28 |
234/15 |
299/10 |
|
660 |
||
|
2.5 |
|
91/113 |
148/47 |
215/26 |
262/16 |
|
660 |
||
|
350 |
4+4 |
0.25 |
100/26 |
157/14 |
254/5 |
352/3 |
|
|
750 |
|
0.6 |
83/73 |
130/34 |
210/14 |
292/8 |
|
|
750 |
||
|
1 |
|
117/54 |
190/23 |
263/13 |
337/8 |
|
750 |
||
|
1.6 |
|
95/96 |
160/38 |
225/20 |
291/13 |
|
750 |
||
|
2.5 |
|
81/158 |
135/63 |
190/34 |
246/21 |
|
750 |
||
|
400 |
4+4 |
0.25 |
|
146/16 |
238/7 |
330/4 |
423/2 |
|
780 |
|
0.6 |
|
122/45 |
199/19 |
276/10 |
354/7 |
|
780 |
||
|
1 |
|
109/74 |
177/31 |
246/17 |
315/11 |
|
780 |
||
|
1.6 |
|
85/130 |
144/52 |
202/28 |
262/17 |
|
780 |
||
|
2.5 |
|
|
112/88 |
157/47 |
203/29 |
250/20 |
780 |
||
|
450 |
4+4 |
0.25 |
|
134/20 |
216/8 |
299/5 |
383/3 |
|
870 |
|
0.6 |
|
129/40 |
208/17 |
289/9 |
369/6 |
|
870 |
||
|
1 |
|
109/68 |
176/29 |
244/16 |
312/10 |
|
870 |
||
|
1.6 |
|
|
115/9 |
162/48 |
210/29 |
258/20 |
870 |
||
|
2.5 |
|
|
86/198 |
122/105 |
158/65 |
193/44 |
870 |
||
|
500 |
4+4 |
0.25 |
|
123/26 |
199/11 |
277/6 |
355/4 |
|
920 |
|
0.6 |
|
119/53 |
193/22 |
267/12 |
342/8 |
|
920 |
||
|
1 |
|
99/90 |
160/38 |
222/21 |
285/13 |
|
920 |
||
|
1.6 |
|
|
101/127 |
43/66 |
186/41 |
229/27 |
920 |
||
|
2.5 |
|
|
76/284 |
107/149 |
140/91 |
172/62 |
920 |
||
|
600 |
4+4 |
0.25 |
|
111/54 |
188/22 |
265/12 |
342/7 |
|
1010 |
|
0.6 |
|
108/108 |
181/43 |
256/23 |
331/14 |
|
1010 |
||
|
1 |
|
83/220 |
319/88 |
197/47 |
254/29 |
|
1010 |
||
|
1.6 |
|
|
98/182 |
143/93 |
187/56 |
232/38 |
1010 |
||
|
2.5 |
|
|
82/307 |
119/157 |
156/95 |
193/63 |
1010 |
||
|
700 |
4+4 |
0.25 |
|
98/82 |
166/32 |
236/17 |
305/11 |
|
1140 |
|
0.6 |
|
|
161/64 |
228/34 |
295/32 |
263/14 |
1140 |
||
|
1 |
|
|
117/132 |
165/70 |
214/43 |
264/29 |
1140 |
||
|
1.6 |
|
|
81/287 |
199/144 |
157/86 |
196/57 |
1140 |
||
|
800 |
4+4 |
0.25 |
|
|
146/45 |
208/24 |
271/15 |
334/10 |
1240 |
|
0.6 |
|
|
141/93 |
201/49 |
262/30 |
323/20 |
1240 |
||
|
1 |
|
|
102/182 |
146/95 |
190/59 |
235/40 |
1240 |
||
|
1.6 |
|
|
69/402 |
103/200 |
137/119 |
170/79 |
1240 |
||
|
900 |
4+4 |
0.25 |
|
|
|
184/49 |
249/28 |
314/18 |
1370 |
|
0.6 |
|
|
|
179/97 |
242/56 |
305/37 |
1370 |
||
|
1 |
|
|
|
139/171 |
188/99 |
237/64 |
1370 |
||
|
1.6 |
|
|
|
103/369 |
139/213 |
176/139 |
1370 |
||
|
1000 |
4+4 |
0.25 |
|
|
|
194/52 |
266/30 |
340/19 |
1500 |
|
0.6 |
|
|
|
194/104 |
266/59 |
340/38 |
1500 |
||
|
1 |
|
|
|
148/185 |
204/106 |
260/68 |
1500 |
||
|
1.6 |
|
|
|
108/416 |
148/237 |
189/153 |
1500 |
||
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