Section 01
Short Description
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Description
Figure 1.1 —The HT-400 pump is used in all phases of oilfield operation to pump water, cement, fracturing fluids, and other stimulation fluids. The three main parts of the pump are (1) the power end, (2) a spacer, and (3) the fluid end.
Power End
Spacer
Fluid End
Assembled Pump J un e 199 7
HT-400 Description
1-1
Power End
Spacer
Fluid End 1-2
HT-400 Pump Maintenance and Repair Manual
J u n e 1 9 97
Design Features
HT-400 Power End
Case
Worm-Gear/Input-Shaft Drive Flange
J un e 199 7
HT-400 Description
1-3
9 2
6 3
0 3
1 3
2 3
7 3
3 3
5 3
0 3
9 2
3 3
4 3
r
1 3
e g n
2 3
8 2
a h c
1 4
0 4
8 3
5 2
7 2
x
A w e i V E t a e H o T
3 4
2 4 6 2
9 3
5 1
9
2 2
6 8 9 1
7
0 1
1 2
5
2
3 1 1
1
1-4
HT-400 Pump Maintenance and Repair Manual
d n a h t f e l d n a d n a h t h g i r e h t n i s e c n e r e f f i d t h g i l S . d n e d i u l f . n i 6 d n a , e v i r d e n o C , r e c a p S 4 L n a h t i w d n e r e . w 0 o 1 p d 1 n e a g h - a t h P g n i r o 0 d 0 e 4 - s T s u H c s i — d A e 2 . r 1 a s e r p u m g u i F p June 1997
Table 1.1—List of Locations on Cross-Sectioned Pump (Figures 1.2A and 1.2B) Loc
Description
Loc
Description
Loc
Description
1
Companion Flange
16
Thrust Ring
31
Valve Seat
2
Worm Gear
17
Gear-Support Bearing
32
Valve-Seat O-ring
3
Ring Gear
18
Flanged Stud
33
Guide-Bushing Retainers
4
Flange-Gear/Spline-Drive Coupling
19
Crosshead
34
Suction-Valve Stop
5
Connecting Rod and Bearings
20
Injector
35
Discharge-Valve Cover
6
Connecting-Rod Pins
21
Bypass Valve
36
Cover Retainer
7
Crosshead Shoes
22
Gauges
37
Cylinder-Head Cover
8
Crosshead Slides
23
Gear Lugs
38
Packing
9
Worm-Thrust Bearing
24
Gear Washers
39
Wiper Seal
10
Worm Radial Bearing—Thrust End
25
Fluid-End Section
40
Top Tie-Bolt
11
Worm Radial Bearing—Drive End
26
Plunger
41
Bottom Tie-Bolt
12
Crankshaft Main Bearing—Narrow
27
Plunger Tie-Bolt
42
Wiper Gland
13
Crankshaft Main Bearing—Wide
28
Plunger Nose
43
Packing Nut
14
Gear-Support Bearing
29
Frac Valve
44
Crankshaft/Spline-Drive Coupling
15
Oil Pump
30
Valve Insert
Note: Location numbers correspond to numbers in Figures 1.2A and 1.2B.
3 23
24
4
14 17
16
12
13
18
12
20
44
View B
Figure 1.2B—Section view of an HT-400 pump power-end section through the crankshaft.
June 1997
HT-400 Description
1-5
Worm and Ring Gears
Crankshaft
Connecting Rods, Crossheads, and Slides
Bearings
1-6
HT-400 Pump Maintenance and Repair Manual
June 1997
Shims
Lube System
June 1997
HT-400 Description
1-7
Strainer
Filter
Figure 1.3—The Schroeder strainer and filter are used on HT-400 pumps built after April 1974.
Injector and Magnetic Seal
Oil Pump
1-8
HT-400 Pump Maintenance and Repair Manual
June 1997
Bypass Valve
Oil Filter/Strainer System
Heat Exchanger June 1997
HT-400 Description
1-9
Gauges
Right- and Left-Hand Pumps
1-10
HT-400 Pump Maintenance and Repair Manual
June 1997
Right
Left
Figure 1.4—To maximize available space, operators can choose a right- or left-hand power end. The difference between the units is the position of the housing from the fluid- end view.
Fluid End
Fluid-End Sections
June 1997
HT-400 Description
1-11
Plungers
1-12
HT-400 Pump Maintenance and Repair Manual
June 1997
Figure 1.5—Valves direct the fluid that is moved by the plunger. (A.) As the plunger is withdrawn from a fluid-end section, a partial vacuum is created. (B.) As the plunger re-enters the fluid-end section, the fluid is pressurized.
Valves
June 1997
HT-400 Description
1-13
Ball Valves
Special Discharge Cover Special Suction Stop
Wave Spring Short Cage
2-in. Ball Ball Valve Insert Drop-In Seat Frac Valve Insert
Suction Discharge
Figure 1.6—Typical 2-in. ball valve.
1-14
HT-400 Pump Maintenance and Repair Manual
June 1997
Valve Springs
Valve Seats
June 1997
HT-400 Description
1-15
Guide-Bushing Retainers
Suction-Valve Stops
Valve Covers
Cylinder-Head Covers
1-16
HT-400 Pump Maintenance and Repair Manual
June 1997
Pressure Packing
Short Packing
Conventional V Packing
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HT-400 Description
1-17
Figure 1.7—The short-stack arrangement uses a homogeneous rubber ring, a single ring of double-stack V-type packing, a thin brass backup ring, and a steel carrier.
1-18
HT-400 Pump Maintenance and Repair Manual
June 1997
Wiper Glands
Flanges
Fluid-End Assembly June 1997
HT-400 Description
1-19
Seal Plates
Plunger Lubrication
1-20
HT-400 Pump Maintenance and Repair Manual
June 1997
Spacer Assemblies
Similarities
Function
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HT-400 Description
1-21
Construction
Wiper Glands
Seal Plates
1-22
HT-400 Pump Maintenance and Repair Manual
June 1997
Mounting Pads
Differences L Spacers
L-2 Spacer
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HT-400 Description
1-23
L-3 Spacer
L-4 Spacer
1-24
HT-400 Pump Maintenance and Repair Manual
June 1997
HT-400 Specifications and Data
Table 1.2—Power End Companion Flange
1800 Series Spicer
Input Spline
3-in.—10 (7.62 cm)
Input Rotation
Clockwise
Maximum Input Torque
7,215 lbf (9,782.227 N·m)
Maximum Input Horsepower
(8.4 Gear) 800 hp (596.560 kW) (8.6 Gear) 600 hp (447.420 kW)
Input Speed w/8.4:1 or 8.6:1 Gears
2,400 (Maximum rev/min)
Gear Train
Steel worm and bronze ring w/8.4:1 or 8.6:1 ratio (standard)
Crankshaft
Forged steel, four main bearings
Connecting Rods
Three, forged aluminum, split caps, and insert bearings
Crossheads
Three, cast steel
Case
High-strength steel weldment
Bearing Type
Roller and race
Oil System
Gear pump driven off worm (std) or remote
Oil Filter
Replaceable elements and magnetic strainer (Schroeder)
Oil Capacity
22 U.S. gal (0.083 m 3)
Oil Type
Power-End Lubricants, Section 2, Page 2-3 to 2-5
Oil Pressure
80 to 100 psi (0.552 to 0.689 MPa) Schroeder 35 to 40 psi (0.241 to 0.276 MPa) at 190 worm-gear rev/min
Minimum Oil Flow
36 gal/min (136.275 m /min)
Weight (wet)
3,864 lb (1,752.681 kg)
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3
HT-400 Description
1-25
Table 1.3—Pump Assembly Weight Spacer lb (kg) Size in. (cm)
No Spacer
L-4 Spacer
L-2 Spacer
3 / 8 (8.573)
5,589 (2535.128)
5,731 (2599.538)
5,843 (2650.340)
4 (10.160)
5,414 (2455.749)
5,556 (2520.159)
5,668 (2570.962)
4 / 2 (11.430)
5,455 (2474.346)
5,597 (2538.757)
5,709 (2589.559)
5 (12.700)
5,392 (2445.770)
5,534 (2510.180)
5,646 (2560.983)
6 (15.240)
5,331 (2418.101)
5,473 (2482.511)
5,585 (2533.313)
3
1
Table 1.4—Fluid End Fluid-End Type
Horizontal, triplex, three-piece forged steel
Plunger Type
Single-acting, hard-surfaced
Valve Type
Double-guided, carburized, high-contact
Valve Seats
Carburized and replaceable
Pressure Packing
Discharge Flange
(1) Hard and soft rubber with cotton ducking reinforcement for nonacid pumping and (2) hard rubber with cotton-polyester duck for acid pumping. Have V-shaped cross section and installed in the Fluid-End bore. (1) Blank, straight with one outlet or (2) ell with two outlets
Oil System
External; uses pneumatic reservoir
Table 1.5—Fluid-End Weight Size in. (cm) 3
Weight lb (kg)
3 / 8 (8.573)
1,725 (782.447)
4 (10.160)
1,550 (703.068)
1
4 / 2 (11.430)
1,591 (721.666)
5 (12.700)
1,528 (693.089)
6 (15.240)
1,467 (665.420)
Table 1.7—Spacer Weight lb (kg)
1-26
L-4
L-2
142 (64.410)
254 (115.213)
HT-400 Pump Maintenance and Repair Manual
Table 1.6—Discharge Pressure Size in. (cm) 3
Maximum Working Pressure psi (MPa)
3 / 8 (8.573)
20,000 (137.895)
4 (10.160)
14,000 (96.527)*
1
4 / 2 (11.430)
11,200 (77.221)
5 (12.700)
9,000 (62.053)
6 (15.240)
6,250 (43.092)
*For static pressure testing, such as testing lines, BOP stacks, etc., the 4-in. (10.160-cm) fluid end is rated to 15,000 psi (103.421 MPa) maximum pressure.
June 1997
Left-Hand Ell Part No. 316.23017 Connections 1 @ 3-in.-15,000 psi 1 @ 2-in.-15,000 psi
Left-Hand Ell Part No. 316.21677 Connections 2 @ 2-in.-20,000 psi
Right-Hand Ell Part No. 316.23019 Connections 1 @ 3-in.-15,000 psi 1 @ 2-in.-15,000 psi
Right-Hand Ell Part No. 316.21676 Connections 2 @ 2-in.-20,000 psi
Straight Part No. 316.27482 Connections 1 @ 3-in.-15,000 psi
Straight Part No. 316.21013 Connections 1 @ 2-in.-20,000 psi
Blank Part No. 316.22980 Connections None
Blank Part No. 316.21673 Connections None
Figure 1.8—Flanges for 4 to 6-in. fluid ends
Figure 1.9—Flanges for 3 3 / 8- in. fluid ends
Table 1.8—Pump Dimensions in. (cm) Dimensionsa
Fluid-End Size 3
3 /8 (8.573)
4 (10.160)
4 1/2 (11.430)
5 (12.700)
6 (15.240)
A
4.62 (11.735)
4.62 (11.735)
4.75 (12.065)
4.62 (11.735)
4.62 (11.735)
B
6.75 (17.145)
6.75 (17.145)
6.62 (16.815)
6.75 (17.145)
6.75 (17.145)
C
8.17 (20.752)
8.17 (20.752)
8.67 (22.022)
8.17 (20.752)
8.17 (20.752)
D
52.57 (133.528)
52.57 (133.528)
52.57 (133.528)
52.57 (133.528)
52.82 (134.163)
D @ L-4
59.08 (150.063)
59.08 (150.063)
58.83 (149.428)
59.08 (150.063)
59.08 (150.063)
D @ L-2
59.08 (150.063)
59.08 (150.063)
58.83 (149.428)
59.08 (150.063)
59.08 (150.063)
E
37.02 (94.031)
36.47 (92.634)
36.62 (93.015)
36.28 (92.151)
36.13 (91.770)
E @ L-4
39.39 (100.051)
38.71 (98.323)
38.88 (98.755)
38.58 (97.993)
38.32 (97.333)
E @ L-2
39.50 (100.330)
38.40 (100.330)
39.02 (99.111)
38.65 (98.171)
38.45 (97.663)
F
17.05 (43.307)
17.37 (44.120)
17.28 (43.891)
17.05 (43.307)
17.05 (43.307)
a
Dimension letters correspond to letters in Figure 1.10
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HT-400 Description
1-27
C L Crankshaft
2X 7/8-9 NC
4.50 (11.4 cm)
C L Worm 7.50 (19.0 cm) 23.12 (58.7 cm)
16.25 (41.3 cm)
CG
2X ø .56 (2X ø 1.4 cm)
24.37 (61.9 cm)
2X ø 1.03 (2X ø 2.6 cm)
Top View
CG
5.12 (13.0 cm)
10.25 (26.0 cm)
23.12 (58.7 cm) 41.60 (105.7 cm)
Front View Figure 1.10—HT-400 general dimensions
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HT-400 Pump Maintenance and Repair Manual
June 1997
HT-400 Duty Ratings
Operation Limits (8.6:1 gear)
Operation Limits (8.4:1)
June 1997
HT-400 Description
1-29
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