GB2106617A - A branchpipe - Google Patents

A branchpipe Download PDF

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Publication number
GB2106617A
GB2106617A GB08227713A GB8227713A GB2106617A GB 2106617 A GB2106617 A GB 2106617A GB 08227713 A GB08227713 A GB 08227713A GB 8227713 A GB8227713 A GB 8227713A GB 2106617 A GB2106617 A GB 2106617A
Authority
GB
United Kingdom
Prior art keywords
flow
outlet
branchpipe
spray
ball
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB08227713A
Other versions
GB2106617B (en
Inventor
Ronald Stuart Higham
Dr Stephen Anthony Owen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EAGLES Ltd WILLIAM
Original Assignee
EAGLES Ltd WILLIAM
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EAGLES Ltd WILLIAM filed Critical EAGLES Ltd WILLIAM
Priority to GB08227713A priority Critical patent/GB2106617B/en
Publication of GB2106617A publication Critical patent/GB2106617A/en
Application granted granted Critical
Publication of GB2106617B publication Critical patent/GB2106617B/en
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • A62C31/03—Nozzles specially adapted for fire-extinguishing adjustable, e.g. from spray to jet or vice versa
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/061—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with several liquid outlets discharging one or several liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0605—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)

Abstract

A fire fighting branchpipe comprises a ball valve 2 fitted to a branchpipe stem 10 between its inlet 1 and outlet 4. A central tube 3 is coaxially disposed within the stem 10. One flow path leads from inlet to outlet 4 through the ball of the valve and the central tube 3 and another from the inlet to a further outlet around the ball and between the tube 3 and stem 10. A vane 5 is disposed in the bore in the valve 2, and sleeve device 11 is screwed onto the stem 10 adjacent the further outlet end. By adjusting the rotational position of the ball flow along the first mentioned path may be shut off or delivered as a spray or a jet. By adjusting the position of the sleeve device 11 flow along the other path may be shut off or delivered at the outlet as a curtain spray of variable angle. Flow adjustment along one path is independent of flow adjustment along the other. <IMAGE>

Description

SPECIFICATION A branchpipe The present invention relates to a branchpipe for fire fighting equipment.
According to the present invention, there is provided a branchpipe having an inlet and an outlet, and two independent flow paths from inlet to outlet, valve means disposed between the inlet and the outlet, and control means for controlling the valve means in order to control flow from inlet to outlet along the two flow paths independently of one another in order to produce at the outlet either a jet or a spray from the flow along one flow path and a curtain spray from the flow along another flow path.
In one form the valve means comprise a bail valve to control the main flow along the said one path.
Depending on the orientation of the ball valve the main flow from the outlet of the branchpipe can be in the form of a jet or alternatively a spray or alternatively shut-off.
In addition, water can pass along the said other path around the ball valve controlling the main flow to feed a device at the outlet end of the branchpipe which discharges the water in the curtain spray from an annular orifice which is around the central branchpipe orifice for the main flow.
In order that the invention shall be clearly understood, one embodiment of fire fighting branchpipe will now be described with reference to the accompanying drawing in which: Figure 1 shows a cross-section through the branchpipe and Figure 2 a cross-section through the ball of a ball valve forming part of the branchpipe of Figure 1.
Referring to Figure 1, water enters the branch pipe under pressure at the inlet 1 and the main flow passes through the orifice of the ball valve 2 and into the central tube 3 and out of the branchpipe through the orifice of the internal nozzle 4. The ball valve 2 has a vane 5 positioned in its orifice. Refererring to Figure 2 if the flow is from left to rightthrough the ball valve 2 the vane 5 will act as a stream form and the flow through the orifice of the internal nozzle 4 will be discharged in the form of a jet. Alternatively if the flow through the ball valve 2 is in the opposite direction, from right to left in Figure 2, the vane 5 acts to swirl the main flow of water so that water discharged through the orifice of the internal nozzle 4 is in the form of a spray.
Thus the orientation of the ball 2 in the branch pipe determines the form of the discharged outlet stream.
A seal 6 of suitable material is provided attached to the inlet adaptor 7 of the central tube 3 so that in one position of the ball valve 2, the main flow through the central tube 3 can be completely shut-off.
The ball valve 2 is controlled by a lever 8. In the forward position with lever 8 pointing in the positive z direction, as shown in Figure 1, the main flow is off.
With the lever 8 pointing in the positive y direction, the main flow will be in the form of a jet and with lever 8 pointing in the negative y direction the main flow will be in the form of a spray. Note that the lever positions for jet and spray can be reversed, if required, during manufacture by reposition of the ball valve 2 through 1800.
Independent of the orientation of the ball valve 2, some inlet water will pass around the ball valve 2 and through ports 9 of the internal adaptor 7 to form the secondary flow in the annulus between the outside of the central tube 3 and the inside of the branchpipe stem 10.
This secondary flow is controlled by a sleeve device 11 which by means of a screwthread 12 can move in the positive and negative z directions relative to the main body of the branchpipe. When the device 11 is screwed back in the negative z direction the secondary flow is discharged through the annular orifice 13 formed between the device 11 and the internal nozzle 4 in the form of a wide angled curtain spray.
When the device 11 is screwed forward in the positive z direction the '0' ring seal 14 located in device 11 seals against the internal nozzle 4 and closes the curtin spray.
The curtain device 11 is fitted with a large rubber bumper ring 15 to prevent damage if the branchpipe is dropped.
Thus it is possible to obtain independent control of both main flow and curtain spray to give the following combinations.
MAIN FLOW CURTAIN SPRAY (secondary flow) Off Off On-jet Off On-spray Off Off On On-jet On On-spray On Although in the present embodiment the curtain is either on or off it is possible to shape the form of the annular orifice 13 to provide control of the angle of the discharged curtain spray depending on the position of the curtain device 11 relative to the main body of the branchpipe which includes internal nozzle 4.
In use, the branchpipe will be fitted with an appropriate inlet adaptor for attaching the branchpipe to hose and the internal nozzle 4 may also be fitted with an additional screw-on tip to vary the size of the outlet jet. The above described embodiment therefore allows the said water curtain spray to be on or off independent of whether the main flow, either jet or spray, is on or off, and vice-versa and the two controls being entirely independent in this respect.
1. A branch pipe having an inlet and an outlet, and two independent flow paths from inlet to outlet, valve means disposed between the inlet and the The drawings originally filed were informal and the print here reproduced is taken from a later filed formal copy.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (11)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION A branchpipe The present invention relates to a branchpipe for fire fighting equipment. According to the present invention, there is provided a branchpipe having an inlet and an outlet, and two independent flow paths from inlet to outlet, valve means disposed between the inlet and the outlet, and control means for controlling the valve means in order to control flow from inlet to outlet along the two flow paths independently of one another in order to produce at the outlet either a jet or a spray from the flow along one flow path and a curtain spray from the flow along another flow path. In one form the valve means comprise a bail valve to control the main flow along the said one path. Depending on the orientation of the ball valve the main flow from the outlet of the branchpipe can be in the form of a jet or alternatively a spray or alternatively shut-off. In addition, water can pass along the said other path around the ball valve controlling the main flow to feed a device at the outlet end of the branchpipe which discharges the water in the curtain spray from an annular orifice which is around the central branchpipe orifice for the main flow. In order that the invention shall be clearly understood, one embodiment of fire fighting branchpipe will now be described with reference to the accompanying drawing in which: Figure 1 shows a cross-section through the branchpipe and Figure 2 a cross-section through the ball of a ball valve forming part of the branchpipe of Figure 1. Referring to Figure 1, water enters the branch pipe under pressure at the inlet 1 and the main flow passes through the orifice of the ball valve 2 and into the central tube 3 and out of the branchpipe through the orifice of the internal nozzle 4. The ball valve 2 has a vane 5 positioned in its orifice. Refererring to Figure 2 if the flow is from left to rightthrough the ball valve 2 the vane 5 will act as a stream form and the flow through the orifice of the internal nozzle 4 will be discharged in the form of a jet. Alternatively if the flow through the ball valve 2 is in the opposite direction, from right to left in Figure 2, the vane 5 acts to swirl the main flow of water so that water discharged through the orifice of the internal nozzle 4 is in the form of a spray. Thus the orientation of the ball 2 in the branch pipe determines the form of the discharged outlet stream. A seal 6 of suitable material is provided attached to the inlet adaptor 7 of the central tube 3 so that in one position of the ball valve 2, the main flow through the central tube 3 can be completely shut-off. The ball valve 2 is controlled by a lever 8. In the forward position with lever 8 pointing in the positive z direction, as shown in Figure 1, the main flow is off. With the lever 8 pointing in the positive y direction, the main flow will be in the form of a jet and with lever 8 pointing in the negative y direction the main flow will be in the form of a spray. Note that the lever positions for jet and spray can be reversed, if required, during manufacture by reposition of the ball valve 2 through 1800. Independent of the orientation of the ball valve 2, some inlet water will pass around the ball valve 2 and through ports 9 of the internal adaptor 7 to form the secondary flow in the annulus between the outside of the central tube 3 and the inside of the branchpipe stem 10. This secondary flow is controlled by a sleeve device 11 which by means of a screwthread 12 can move in the positive and negative z directions relative to the main body of the branchpipe. When the device 11 is screwed back in the negative z direction the secondary flow is discharged through the annular orifice 13 formed between the device 11 and the internal nozzle 4 in the form of a wide angled curtain spray. When the device 11 is screwed forward in the positive z direction the '0' ring seal 14 located in device 11 seals against the internal nozzle 4 and closes the curtin spray. The curtain device 11 is fitted with a large rubber bumper ring 15 to prevent damage if the branchpipe is dropped. Thus it is possible to obtain independent control of both main flow and curtain spray to give the following combinations. MAIN FLOW CURTAIN SPRAY (secondary flow) Off Off On-jet Off On-spray Off Off On On-jet On On-spray On Although in the present embodiment the curtain is either on or off it is possible to shape the form of the annular orifice 13 to provide control of the angle of the discharged curtain spray depending on the position of the curtain device 11 relative to the main body of the branchpipe which includes internal nozzle 4. In use, the branchpipe will be fitted with an appropriate inlet adaptor for attaching the branchpipe to hose and the internal nozzle 4 may also be fitted with an additional screw-on tip to vary the size of the outlet jet. The above described embodiment therefore allows the said water curtain spray to be on or off independent of whether the main flow, either jet or spray, is on or off, and vice-versa and the two controls being entirely independent in this respect. CLAIMS
1. A branch pipe having an inlet and an outlet, and two independent flow paths from inlet to outlet, valve means disposed between the inlet and the The drawings originally filed were informal and the print here reproduced is taken from a later filed formal copy.
outlet, and control means for controlling the valve means in order to control flow from inlet to outlet along the two flow paths independently of one another in order to produce at the outlet either a jet or a spray from the flow along one flow path and a curtain spray from the flow along another flow path.
2. A branch pipe as claimed in claim 1, in which the valve means comprises a ba!l valve having a ball defining a bore and the control means comprises a control member for rotatiny the ball to permit or prevent flow along the said one path.
3. A branch pipe as claimed in Claim 2, in which the ball valve comprise a device mounted within the bore of the ball and operative, when oriented in one direction in the bore, to produce a spray and, when oriented in another direction, to produce a jet at the outlet from the flow along the said one flow path.
4. A branch pipe as claimed in Claim 3, in which the device is a vane which is reversed between the first and second directions.
5. A branch pipe as claimed in any preceding claim, in which the valve means comprises a control member for varying the outlet angle of the curtain spray.
6. A branch pipe as claimed in Claim 5, in which the other flow path is of annular cross section and coaxially surrounds the first flow path and the control member comprises an adjustable sleeve disposed at the outlet.
7. A branch pipe as claimed in Claim 6, in which the sleeve is axially movable on a pipe which partially defines the other flow path.
8. A branch pipe as claimed in Claim 7, in which the sleeve is screwthreadedly mounted on the pipe.
9. A branch pipe as claimed in Claim 6,7 or 8, in which the other flow path passes around the ball between the ball and the ball housing.
10. A branch pipe substantially as hereinbefore described with reference to the accompanying drawings.
11. Fire fighting apparatus comprising a branch pipe as claimed in any preceding ciaim.
GB08227713A 1981-09-29 1982-09-29 A branchpipe Expired GB2106617B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08227713A GB2106617B (en) 1981-09-29 1982-09-29 A branchpipe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8129376 1981-09-29
GB08227713A GB2106617B (en) 1981-09-29 1982-09-29 A branchpipe

Publications (2)

Publication Number Publication Date
GB2106617A true GB2106617A (en) 1983-04-13
GB2106617B GB2106617B (en) 1985-07-03

Family

ID=26280844

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08227713A Expired GB2106617B (en) 1981-09-29 1982-09-29 A branchpipe

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2233426A (en) * 1989-06-20 1991-01-09 Devilbiss Co Spraygun regulating valve
WO2002066114A1 (en) * 2001-02-20 2002-08-29 Hemsing Sachverständigenbüro für Brandschutz GmbH Fine spray lance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2233426A (en) * 1989-06-20 1991-01-09 Devilbiss Co Spraygun regulating valve
WO2002066114A1 (en) * 2001-02-20 2002-08-29 Hemsing Sachverständigenbüro für Brandschutz GmbH Fine spray lance

Also Published As

Publication number Publication date
GB2106617B (en) 1985-07-03

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Legal Events

Date Code Title Description
711A Proceeding under section 117(1) patents act 1977
PCNP Patent ceased through non-payment of renewal fee