Device for testing loading capacity of spray head

Abstract

The utility model provides a nozzle loading capacity testing device, which comprises a protection box and a main pipe, the protection box is provided with an operation port with an upward opening, the inner bottom wall of the protection box is provided with a bracket, and the top of the protection box is provided with a sealing plate for sealing the operation port; the main pipe is arranged on the bracket in the horizontal direction, the top of the main pipe is provided with a pressure measuring part and an exhaust part, the bottom of the main pipe is provided with a water injection part and a water drainage part, the water injection part is used for being connected with a water outlet of a booster pump, the outer circumferential wall of the main pipe is connected with branch pipes used for being in threaded connection with a spray head, and a plurality of branch pipes are arranged in the axial direction of the main pipe at intervals. The nozzle loading capacity testing device provided by the utility model not only can be repeatedly used for testing nozzles with different specifications in various projects, but also can ensure the safety of workers.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of spray head pressure test, more specifically, relate to a spray head pressure capacity testing device. BACKGROUND

[0002] Most of the mechanical and electrical engineering projects involve spray head, according to the specification requirements, spray head enters the field and is subjected to strength and tightness test. Basically, when each project is carried out, the simple spray head pressure capacity testing device corresponding to the specification is separately manufactured, the safety is low, and the spray head pressure capacity testing device is used once, the turnover rate is low, after use, generally, the spray head pressure capacity testing device is treated as waste material, a large amount of manpower and material resources are spent, the cost and construction period are increased, and waste is serious. UTILITY MODEL CONTENTS

[0003] The utility model embodiment provides a spray head pressure capacity testing device, which can be repeatedly used for testing different specifications of spray heads in various projects, and can also ensure the safety of workers.

[0004] To achieve the above object, the utility model adopts the technical scheme of providing a spray head pressure capacity testing device, which comprises a protection box and a main pipe, the protection box has an operating port opening upward, a seat is arranged on the inner bottom wall of the protection box, and a sealing plate for plugging the operating port is arranged on the top of the protection box; the main pipe is arranged on the seat in the horizontal direction, the top of the main pipe is respectively provided with a pressure measuring part and an exhaust part, the bottom of the main pipe is respectively provided with a water injection part and a drainage part, the water injection part is used for being connected with the water outlet of a pressure pump, a branch pipe used for being threadedly connected with a spray head is connected to the outer peripheral wall of the main pipe, and a plurality of branch pipes are arranged at intervals in the axial direction of the main pipe.

[0005] In one possible implementation, the branch pipe is provided with two groups, the two groups of branch pipes are symmetrically arranged on the two sides of the main pipe, and each group of branch pipes comprises a plurality of branch pipes arranged at intervals in the axial direction of the main pipe.

[0006] In some embodiments, the sealing plate is hinged to the top of the protection box and can vertically swing.

[0007] In some embodiments, the operating port is provided with two operating ports arranged close to the two sides of the protection box respectively, the two operating ports are arranged in one-to-one correspondence with the two groups of branch pipes, and the sealing plate is provided with two sealing plates arranged in one-to-one correspondence with the two operating ports.

[0008] In some embodiments, a mounting plate is arranged on the outer side wall of the protection box, a limiting column extending outward is connected to the mounting plate, a hooking plate is hinged to the outer side edge of the sealing plate, a limiting hole is arranged through the hooking plate, and the hooking plate can vertically swing and make the limiting column inserted into the limiting hole.

[0009] In some embodiments, a magnet for adsorbing the hooking plate is arranged on the mounting plate.

[0010] In one possible implementation, the pressure measuring element is a pressure gauge, which is installed upward through the top wall of the protective box.

[0011] In one possible implementation, the exhaust component includes an exhaust pipe connected to the outer peripheral wall of the main pipe and an exhaust valve disposed on the exhaust pipe, the exhaust pipe extending upward through the top wall of the protective box.

[0012] In one possible implementation, the water injection component includes a water injection pipe connected to the outer peripheral wall of the main pipe and a water injection valve disposed on the water injection pipe.

[0013] In one possible implementation, the drainage component includes a drain pipe connected to the outer peripheral wall of the main pipe and a drain valve disposed on the drain pipe.

[0014] Compared with the prior art, the nozzle pressure bearing capacity testing device provided in this embodiment can test nozzles of different specifications by installing nozzles of different specifications on corresponding branch pipes. It can not only be used to test nozzles of different specifications, but also be reused for different projects. In addition, the personal safety of the test personnel is guaranteed by the protection of the protective box and the sealing plate during the test, which has a high degree of safety. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the nozzle pressure bearing capacity testing device provided in an embodiment of the present utility model;

[0017] Figure 2 This is an embodiment of the present utility model. Figure 1 A magnified schematic diagram of the local structure at point I;

[0018] Figure 3 A schematic diagram of the structure of the nozzle pressure bearing capacity testing device provided in this embodiment of the utility model, in which one of the sealing plates is in the open state;

[0019] Figure 4 This is an embodiment of the present utility model. Figure 3 A magnified schematic diagram of the local structure at point II;

[0020] Figure 5 This is a schematic diagram of the nozzle pressure bearing capacity testing device provided in this embodiment of the utility model, without the protective box and sealing plate.

[0021] Wherein, the reference signs in the figures:

[0022] 10, protection box; 11, operation port; 12, seat; 13, sealing plate; 20, pressure measuring element; 30, exhaust element; 31, exhaust valve; 32, exhaust pipe; 40, water injection element; 41, water injection pipe; 42, water injection valve; 50, drainage element; 51, drainage pipe; 52, drainage valve; 60, main pipe; 61, branch pipe; 62, pipe cap; 70, mounting plate; 71, limiting column; 72, magnet; 80, hooking plate; 81, limiting hole. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects of the utility model clearer, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0024] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the utility model and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. The terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" is two or more, unless otherwise explicitly specified.

[0025] Please refer to Figures 1 to 5 The utility model provides a spray head pressure capacity testing device will be described. The spray head pressure capacity testing device, including protection box 10 and main pipe 60, protection box 10 has the operation port 11 of opening to the upper, the inner bottom wall of protection box 10 is equipped with seat 12, and the top of protection box 10 is equipped with the sealing plate 13 for plugging operation port 11;Main pipe 60 is set on seat 12 along the horizontal direction, and the top of main pipe 60 is equipped with pressure measuring element 20 and exhaust element 30 respectively, and the bottom of main pipe 60 is equipped with water injection element 40 and drainage element 50 respectively, water injection element 40 is used for connecting with the water outlet of pressure pump, and the outer peripheral wall of main pipe 60 is connected with branch pipe 61 for being connected with spray head thread, and branch pipe 61 is spaced apart in the axial direction of main pipe 60 and is equipped with several.

[0026] Further, the branch pipes 61 are threadedly connected with pipe caps 62 for plugging the water outlets of the branch pipes 61, and the unused branch pipes 61 are plugged with the pipe caps 62.

[0027] Further, the two ends of the main pipe 60 are threadedly connected with pipe caps 62 for plugging the ports.

[0028] In actual use, before use, the sealing plate 13 is opened, the caps on the branch pipes 61 to be used are removed, the spray heads to be tested are installed on the corresponding branch pipes 61, and the sealing plate 13 is closed; the water outlet of the pressure pump is connected with the water injection member 40; the exhaust member 30 is opened, the water inlet of the pressure pump is connected with the water source; the power supply of the pressure pump is inserted, water is injected into the main pipe 60, after the exhaust member 30 discharges stable water flow, the exhaust member 30 is closed, and the device is slowly and step by step pressurized by using the pressure pump; when 0.05 MPa is reached, the pressure is maintained for 3 min, the pressurization is stopped, and a comprehensive inspection is performed; if there is an abnormality, the pressure should be released, if there is no abnormality, the pressure is continued to be gradually increased, each step is 0.3 MPa, the pressure is maintained for 3 min, and the pressure is continued to be increased until the test pressure is 3.0 MPa, the pressure is maintained for 3 min, and if there is no abnormality, the test is considered to be qualified, the water is drained and the pressure is released by opening the drainage member 50 and the exhaust member 30 until the pressure is 0 MPa, the sealing plate 13 is opened, and the tested spray heads are removed, after the test is completed, the power supply and the water source are cut off.

[0029] According to the specification requirements, the test quantity should be 1% from each batch, and should not be less than 5, the test pressure should be 3.0 MPa, and the pressure maintaining time should not be less than 3 min. When two or more than two are unqualified, the spray heads in the batch should not be used. When only one is unqualified, 2% should be re-inspected, and should not be less than 10, and the test should be re-performed; when there is still unqualified, the spray heads in the batch should also not be used.

[0030] Compared with the prior art, the spray head pressure capacity test device provided by the embodiment can be applied to different projects by installing spray heads of different specifications on corresponding branch pipes 61 for testing, and can be repeatedly used for testing the pressure capacity of spray heads, and the safety of the tester is ensured by the protection of the protection box 10 and the sealing plate 13 during the test, so that the device has high safety.

[0031] In a possible implementation, the branch pipe 61 adopts the structure shown in Figure 3 and Figure 5 , and as shown in Figure 3 and Figure 5 , the branch pipe 61 is provided with two groups, the two groups of branch pipes 61 are symmetrically arranged on the two sides of the main pipe 60, and each group of branch pipes 61 includes a plurality of branch pipes 61 which are arranged at intervals along the axial direction of the main pipe 60.

[0032] Specifically, the arrangement of the plurality of branch pipes 61 can adapt to the testing of nozzles of different specifications, and the simultaneous testing of multiple nozzles can also be performed, thereby improving the convenience of use.

[0033] Further, the main pipe 60 is made of seamless steel DN80 with a thickness of 4.5 mm, and each reserved branch pipe 61 is connected by automatic welding to ensure the welding quality. The reserved short pipes are provided in 20 (of which 2 are DN25 interfaces, 6 are DN20 interfaces, and 12 are DN15 interfaces).

[0034] In some embodiments, referring to Figure 1 and Figure 3 , the sealing plate 13 is hinged to the top of the protective box 10 and can vertically swing.

[0035] Specifically, when it is necessary to install a test nozzle, the sealing plate 13 is swung upward to avoid the operation opening 11, and after the nozzle is installed, the sealing plate 13 is closed for testing, thereby avoiding the impact of the nozzle on the staff due to the separation of the nozzle from the branch pipe 61 under excessive pressure during the testing process, and improving the safety.

[0036] In some embodiments, referring to Figure 1 and Figure 3 , the operation opening 11 is provided with two and is arranged close to the two sides of the protective box 10, the two operation openings 11 are arranged in one-to-one correspondence with the two groups of branch pipes 61, and the sealing plate 13 is provided with two and arranged in one-to-one correspondence with the two operation openings 11.

[0037] Specifically, the sealing plate 13 is symmetrically arranged on both sides of the central axis of the protective box 10, and the hinge points of the two sealing plates 13 are located on the adjacent side edges of the two sealing plates 13 (in the form of a back opening door), thereby facilitating the staff to install the nozzle on the corresponding group of branch pipes 61.

[0038] In some embodiments, referring to Figures 1 to 4 , the outer side wall of the protective box 10 is provided with a mounting plate 70, the mounting plate 70 is connected with a limiting column 71 extending outward, the outer side edge of the sealing plate 13 is hinged with a hooking plate 80, the hooking plate 80 is provided with a limiting hole 81 penetrating therethrough, and the hooking plate 80 can vertically swing and make the limiting column 71 inserted into the limiting hole 81.

[0039] Specifically, the inner diameter of the limiting hole 81 is greater than the outer diameter of the limiting column 71, thereby facilitating the vertical swinging of the hooking plate 80 to the insertion of the limiting column 71 into the limiting hole 81. If the nozzle separates from the branch pipe 61 due to a large pressure and gives an upward impact to the sealing plate 13, the opening of the sealing plate 13 is limited by the limiting column 71 and the hooking plate 80, thereby effectively ensuring the safety of the staff.

[0040] In some embodiments, referring to Figure 2 and Figure 4The mounting plate 70 is provided with a magnet 72 for adsorbing the hooking plate 80.

[0041] Specifically, the magnet 72 effectively locks the swing position of the hooking plate 80 by adsorbing the hooking plate 80, avoiding the separation of the hooking plate 80 from the limiting column 71.

[0042] In a possible implementation, the pressure measuring element 20 adopts the structure as shown in Figure 1 , Figure 3 and Figure 5 , and the pressure measuring element 20 is a pressure gauge and is arranged upwardly through the top wall of the protection box 10. Figure 1 , Figure 3 and Figure 5 .

[0043] Specifically, the arrangement of the pressure gauge can monitor the pressure change in the main pipe 60 in real time, improving the convenience of use.

[0044] In a possible implementation, the exhaust element 30 adopts the structure as shown in Figure 1 , Figure 3 and Figure 5 , and the exhaust element 30 includes an exhaust pipe 32 connected to the outer peripheral wall of the main pipe 60 and an exhaust valve 31 arranged on the exhaust pipe 32, and the exhaust pipe 32 is arranged upwardly through the top wall of the protection box 10. Figure 1 , Figure 3 and Figure 5 .

[0045] Specifically, when exhaust is needed, the main pipe 60 can be exhausted by opening the exhaust valve 31 to release the pressure, and the exhaust valve 31 is closed after the exhaust is completed, improving the convenience of use.

[0046] In a possible implementation, the water injection element 40 adopts the structure as shown in Figure 3 and Figure 5 , and the water injection element 40 includes a water injection pipe 41 connected to the outer peripheral wall of the main pipe 60 and a water injection valve 42 arranged on the water injection pipe 41. Figure 3 Figure 5 .

[0047] Specifically, when water needs to be injected into the main pipe 60, the water injection valve 42 is opened, and the pressurized pump injects water into the main pipe 60 through the main water pipe, and the water injection valve 42 is in a closed state at ordinary times to avoid foreign matters from entering.

[0048] In a possible implementation, the water drainage element 50 adopts the structure as shown in Figure 3 and Figure 5 , and the water drainage element 50 includes a water drainage pipe 51 connected to the outer peripheral wall of the main pipe 60 and a water drainage valve 52 arranged on the water drainage pipe 51. Figure 3 Figure 5 .​The drain 50 comprises a drain pipe 51 connected to the outer circumferential wall of the main pipe 60 and a drain valve 52 arranged on the drain pipe 51.

[0049] Specifically, after the valve test is completed, the drain valve 52 is opened, and the main pipe 60 is drained, so as to facilitate the next use.

[0050] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for testing the pressure resistance of a spray head, characterized in that The utility model relates to a protection box and a main pipe, and belongs to the field of water conservancy. The protection box has an operating opening opening upward, and a support is arranged on the inner bottom wall of the protection box. The top of the protection box is provided with a sealing plate for sealing the operating opening. The main pipe is arranged on the support in the horizontal direction.

2. The showerhead stress test apparatus of claim 1, wherein The top of the main pipe is respectively provided with a pressure measuring element and an exhaust element.

3. The showerhead stress test apparatus of claim 2, wherein The bottom of the main pipe is respectively provided with a water injection element and a drainage element.

4. The showerhead stress test apparatus of claim 3, wherein The water injection element is used for connecting with the water outlet of a pressurized pump.

5. The showerhead stress test apparatus of claim 4, wherein The outer peripheral wall of the main pipe is connected with branch pipes for threadedly connecting with spray heads.

6. The showerhead stress test apparatus of claim 5, wherein The branch pipes are arranged in the axial direction of the main pipe.

7. The showerhead stress test apparatus of claim 1, wherein The branch pipes are arranged in two groups symmetrically on both sides of the main pipe.

8. The showerhead stress test apparatus of claim 1, wherein Each group of branch pipes includes a plurality of branch pipes arranged in the axial direction of the main pipe.

9. The showerhead stress test apparatus of claim 1, wherein The sealing plate is hingedly connected to the top of the protection box and can vertically swing.

10. The showerhead stress test apparatus of claim 1, wherein The operating opening is arranged in two and is arranged close to both sides of the protection box. The sealing plate is arranged in two and corresponds to the two operating openings. The outer side wall of the protection box is provided with a mounting plate. The outer side edge of the sealing plate is hingedly connected with a hooking plate. The hooking plate can vertically swing and the limiting column is inserted into the limiting hole. The mounting plate is provided with a magnet for adsorbing the hooking plate. The pressure measuring element is a pressure gauge and is arranged upwardly through the top wall of the protection box. The exhaust element includes an exhaust pipe connected to the outer peripheral wall of the main pipe and an exhaust valve arranged on the exhaust pipe. The exhaust pipe is arranged upwardly through the top wall of the protection box. The water injection element includes a water injection pipe connected to the outer peripheral wall of the main pipe and a water injection valve arranged on the water injection pipe. The drainage element includes a drainage pipe connected to the outer peripheral wall of the main pipe and a drainage valve arranged on the drainage pipe.

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