Barrel assembly for a fluid pump having separate plunger bore and outlet passage

Patent metadata

Field	Value
Publication number	US-9926922-B2
Application number	US-201514610921-A
Country	US
Kind code	B2
Filing date	Jan 30, 2015
Priority date	Jan 30, 2015
Publication date	Mar 27, 2018
Grant date	Mar 27, 2018

Abstract

A barrel assembly for a pumping mechanism includes a first end, a second end opposite the first end, and a plunger bore configured to receive a plunger for sliding within the plunger bore. The barrel assembly also includes at least one inlet passage including at least one inlet extending through the first end and fluidly connected to the plunger bore to communicate fluid from the at least one inlet passage to the plunger bore. The barrel assembly further includes an outlet passage fluidly connected to the plunger bore and configured to receive fluid from the plunger bore, the plunger bore and the outlet passage forming separate openings in the second end of the barrel assembly.

First claim

What is claimed is:

1. A barrel assembly for a pumping mechanism, the barrel assembly defining a longitudinal axis and comprising:
a first end;
a second end opposite the first end;
a plunger bore configured to receive a plunger for sliding within the plunger bore;
at least one inlet passage, including at least one inlet opening, extending through the first end and fluidly connected to the plunger bore to communicate fluid from the at least one inlet passage to the plunger bore; and
an outlet passage fluidly connected to the plunger bore including
a first portion of the outlet passage extending from the plunger bore towards the first end of the barrel assembly at an acute angle with respect to the longitudinal axis, an outlet check valve disposed in the first portion of the outlet passage,
and a second portion of the outlet passage parallel to the plunger bore, the first portion of the outlet passage fluidly connecting the second portion of the outlet passage and the plunger bore, the second portion of the outlet passage being located closer to an outer surface of the barrel assembly than the plunger bore the outlet passage being configured to receive fluid from the plunger bore, wherein the plunger bore includes a plunger bore opening in the second end of the barrel assembly and the outlet passage includes an outlet passage opening in the second end of the barrel assembly.

2. The barrel assembly of claim 1 , wherein the plunger bore extends parallel to the longitudinal axis of the barrel assembly.

3. The barrel assembly of claim 2 , wherein the outlet passage further includes a second portion extending parallel to the longitudinal axis of the barrel assembly, the parallel-extending second portion of the outlet passage including the outlet passage opening in the second end of the barrel assembly.

4. The barrel assembly of claim 1 , wherein the at least one inlet passage is fluidly connected to the plunger bore via an inlet check valve.

5. The barrel assembly of claim 1 , further including at least one mounting bore configured to receive at least one fastener, the at least one mounting bore extending from the first end to the second end.

6. The barrel assembly of claim 5 , wherein the at least one mounting bore is parallel to the plunger bore and at least a portion of the outlet passage.

7. The barrel assembly of claim 1 , wherein the opening of the outlet passage is located closer to an outer surface of the barrel assembly than the opening of the plunger bore.

8. The barrel assembly of claim 7 , wherein a majority of the outer surface of the barrel assembly is cylindrical.

9. The barrel assembly of claim 1 further including a head disposed on the first end of the barrel assembly, wherein the head includes an inlet check valve configured to cooperate with the at least one inlet passage and wherein the head includes an outlet check valve configured to cooperate with the outlet passage.

10. A pumping mechanism comprising:
a barrel assembly defining a longitudinal axis and including:
a first end,
a second end opposite the first end,
a plunger bore configured to receive a plunger for sliding within the plunger bore, the plunger bore extending parallel to the longitudinal axis of the barrel assembly,
at least one inlet passage including at least one inlet opening extending through the first end and fluidly connected to the plunger bore to communicate fluid from the at least one inlet passage to the plunger bore, and
an outlet passage fluidly connected to the plunger bore via an outlet check valve disposed in a first portion of the outlet passage and configured to receive fluid from the plunger bore, the outlet passage including a second portion that is parallel to the plunger bore, the first portion of the outlet passage being disposed between the second portion of the outlet passage and the plunger bore and extending from the plunger bore toward the first end of the barrel assembly at an acute angle with respect to the longitudinal axis, the plunger bore and the outlet passage form separate openings in the second end of the barrel assembly, the opening of the outlet passage being located closer to an outer surface of the barrel assembly than the opening of the plunger bore;

a plunger configured to slide within the plunger bore; and
a push rod configured to slide within the plunger bore to push the plunger to force fluid from the plunger bore into the outlet passage.

11. The pumping mechanism of claim 10 , wherein the push rod is configured to push the plunger within the plunger bore along the longitudinal axis to force fluid past the outlet check valve and into the outlet passage.

12. The pumping mechanism of claim 10 , wherein the at least one inlet passage is fluidly connected to the plunger bore via an inlet check valve, and wherein the plunger bore is configured to receive a flow of pressurized fluid past the inlet check valve, the flow of pressurized fluid operative to push the plunger in a direction towards the second end of the barrel assembly.

13. The pumping mechanism of claim 10 further including a head disposed on the first end of the barrel assembly, wherein the head includes an inlet check valve configured to cooperate with the at least one inlet passage and wherein the head includes an outlet check valve configured to cooperate with the outlet passage.

14. A pump comprising:
a reservoir configured to store a fluid; and
a plurality of pumping mechanisms at least partially disposed in the reservoir, each of the plurality of pumping mechanisms including:
a barrel assembly at least partially disposed in the reservoir such that the fluid surrounds at least a portion of the barrel assembly, the barrel assembly including:
a first end,
a second end opposite the first end,
a plunger bore configured to receive a plunger for sliding within the plunger bore, the plunger bore extending parallel to a longitudinal axis of the barrel assembly,
at least one inlet passage including at least one inlet opening extending through the first end and fluidly connected to the plunger bore to communicate fluid from the at least one inlet passage to the plunger bore, and
an outlet passage fluidly connected to the plunger bore and configured to receive fluid from the plunger bore, the outlet passage including a portion that is parallel to the plunger bore such that the plunger bore and the outlet passage form separate openings in the second end of the barrel assembly, the opening of the outlet passage being located closer to an outer surface of the barrel assembly than the opening of the plunger bore;

a push rod configured to slide within the plunger bore to push the plunger to force fluid from the plunger bore into the outlet passage; and
a jacket and a manifold configured to cover an opening in the jacket to form the reservoir, the plurality of pumping mechanisms connected to the manifold and disposed on a surface of the manifold radially around a center of the surface of the manifold.

15. The pump of claim 14 , wherein the manifold includes a leakage passage fluidly connected to the plunger bore of each of the plurality of pumping mechanisms and configured to receive fluid leaking from between each plunger and plunger bore.

16. The pump of claim 14 , wherein the manifold includes a discharge passage fluidly connected to the outlet passage of each of the plurality of pumping mechanisms and configured to receive the fluid directed from each plunger bore into the corresponding outlet passage of each of the plurality of pumping mechanisms.

17. The pump of claim 14 , wher

Assignees

• Caterpillar Inc

Inventors

• Bean Sunil Jefferey
• Steffen Joshua Wayne
• Coldren Dana Ray
• Campion Robert Michael

Classifications

• F04B39/10 Primary

  Adaptations or arrangements of distribution members · CPC title

• F02M21/0206 Primary

  Non-hydrocarbon fuels, e.g. hydrogen, ammonia or carbon monoxide · CPC title

• F02M21/0218

  Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers · CPC title

• F04B53/14

  Pistons, piston-rods or piston-rod connections · CPC title

• F04B1/143

  Cylinders · CPC title