CN211292379U

CN211292379U - Needle valve water pressure test equipment

Info

Publication number: CN211292379U
Application number: CN201922354424.9U
Authority: CN
Inventors: 金锹华; 吴根良
Original assignee: Jiashan Mingyu Machinery Manufacturing Co ltd
Current assignee: Jiashan Mingyu Machinery Manufacturing Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-08-18
Anticipated expiration: 2029-12-24

Abstract

The utility model relates to a needle valve detection field, in particular to a needle valve water pressure test device, which comprises a first nut in threaded connection with a first side pipe connecting port, a second nut in threaded connection with a second side pipe connecting port, and a test device main body, wherein the test device main body is provided with a test board for arranging the needle valve and communicating with a bottom water inlet hole of the needle valve; the test board is communicated with a water pump; the water pump is communicated with a water tank; the needle valve comprises a top sealing element which is connected with the water outlet hole on the top in a sealing way; the testing device main body is provided with a hydraulic machine used for abutting against the top sealing element; and a push rod of the hydraulic press is fixedly connected with a push plate which is abutted against the surface of the top sealing element. The utility model has the advantages of can promote the security. The problem of prior art security relatively poor is solved.

Description

Needle valve water pressure test equipment

Technical Field

The utility model belongs to the technical field of needle valve detection and specifically relates to a needle valve water pressure test equipment is related to.

Background

The needle valve is a valve which can be accurately adjusted, and has wide application, such as cutting distance for flame cutting, and a knob for adjusting flame temperature is the needle valve. The needle valve of the instrument is an important component of a measuring pipeline system of the instrument, mainly comprises a stop valve and a ball valve, and has the function of opening or cutting off a pipeline passage. Needle valves are capable of withstanding higher pressures and better sealing than other types of valves and are therefore typically used for sealing smaller flow, higher pressure gas or liquid media. For sealing of liquid media at higher pressures, a hydraulic pressure check is necessary for needle valves. Referring to fig. 1, in a conventional needle valve and a conventional needle valve hydraulic pressure detecting method, a needle valve 1 includes a bottom water inlet 11, a top water outlet 12, a first side nozzle 13, and a second side nozzle 14 symmetric with respect to an axial line of the bottom water inlet 11. During the water pressure test, the needle valve 1 is provided with a first nut 15 in threaded connection with the first side connecting pipe opening 13 and a second nut 16 in threaded connection with the second side connecting pipe opening 14; the needle valve 1 is communicated with a water pumping pipe 50 which is in threaded connection with the bottom water inlet hole 11; the water pumping pipe 50 is communicated with a water pumping pump 5; the water pump 5 is communicated with a water tank 6; the needle valve 1 is communicated with a sealing element 120 which is in threaded connection with the top water outlet hole 12. The above prior art solutions have the following drawbacks: the test water pressure in the needle valve 1 can be as high as 6.2Mpa, and if the connection between the needle valve 1 and the sealing element 120 is not firm or the connection between the needle valve 1 and the water pumping pipe 50 is not firm, the sealing element 120 or the water pumping pipe 50 flies out, so that potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, one of the purposes of the utility model is to provide a needle valve water pressure test equipment that can promote the security.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: a needle valve water pressure test device comprises a first nut in threaded connection with a first side connecting pipe port, a second nut in threaded connection with a second side connecting pipe port and a test device main body, wherein the test device main body is provided with a test board for placing a needle valve and communicated with a bottom water inlet hole of the needle valve; the test board is communicated with a water pump; the water pump is communicated with a water tank; the needle valve comprises a top sealing element which is connected with the water outlet hole on the top in a sealing way; the testing device main body is provided with a hydraulic machine used for abutting against the top sealing element; and a push rod of the hydraulic press is fixedly connected with a push plate which is abutted against the surface of the top sealing element.

Through adopting above-mentioned technical scheme, needle valve water pressure test operation: the bottom water inlet hole of the needle valve is hermetically connected with the test board; a first nut is screwed on the first side pipe connecting port to finish sealing, and a second nut is screwed on the second side pipe connecting port to finish sealing; the top water outlet hole is connected with the top sealing element in a sealing way; the hydraulic press is started to enable the push plate to abut against the top sealing element to reinforce and limit the needle valve, the test board is communicated with the water suction pump, the water suction pump is started to perform water pressure test on the needle valve, the needle valve is fixed on the test board, and the top sealing element is pressed by the push plate to prevent personnel safety accidents caused by flying-out of a connecting piece on the needle valve; and the mechanical auxiliary test is more time-saving and labor-saving.

The present invention may be further configured in a preferred embodiment as: the test bench comprises a bearing plate fixedly connected to the test device main body, a lifting plate fixedly connected to the bearing plate and a plurality of bottom sealing elements fixedly connected to the lifting plate and communicated with each other, and the bottom sealing elements are in threaded connection with the bottom water inlet holes in a sealing mode.

Through adopting above-mentioned technical scheme, a plurality of bottom seal spare make the utility model discloses a plurality of needle valves of single measurable have improved efficiency of software testing, have practiced thrift test time.

The present invention may be further configured in a preferred embodiment as: a water flow channel is formed in each bottom sealing element; connecting pipes communicated with the water flow channels of the bottom sealing elements are arranged between the adjacent bottom sealing elements; one of the bottom sealing elements is provided with a connecting hole communicated with the water flow channel; the bottom sealing element is connected with a water receiving pipe which is in threaded sealing connection with the connecting hole; one end of the water receiving pipe is connected with the bottom sealing element, and the other end of the water receiving pipe is connected with the water suction pump through sealing threads.

Through adopting above-mentioned technical scheme, the suction pump passes through the water receiving pipe with the water in the water tank and carries to the needle type valve of test in, through the connecting pipe between the bottom sealing member, has realized that only need a water receiving pipe just can supply water to a plurality of needle type valves and carry out the water pressure test, has practiced thrift material cost and has carried and practiced thrift needle type valve installation time.

The present invention may be further configured in a preferred embodiment as: the push plate is provided with a limit groove which is embedded with the top sealing element; a damping cushion body sleeved on the circumferential direction of the top sealing element is arranged in the limiting groove; the surface that the top sealing member and push pedal butt are provided with increases the rib that rubs.

By adopting the technical scheme, the top sealing element is embedded in the limiting groove, so that the needle valve can be effectively limited; the damping cushion body and the friction increasing ribs ensure that the top sealing piece and the push plate are not easy to deviate; the safety accident caused by the separation of the needle valve connecting piece due to high water pressure is avoided.

The present invention may be further configured in a preferred embodiment as: the testing device comprises a testing device body and a testing device body, wherein the testing device body comprises an operating platform and a supporting frame fixedly connected to the operating platform, the supporting frame comprises two longitudinal supporting pieces which are parallel to each other and a transverse bearing plate fixedly connected between the longitudinal supporting pieces, and the transverse bearing plate is connected with a hydraulic machine through a bolt; a shock absorber is hinged between the longitudinal supporting piece and the transverse bearing plate.

Through adopting above-mentioned technical scheme, the support intensity and the shock attenuation effect of the support frame that the bumper shock absorber was strengthened for the support frame is more steady to the support of hydraulic press, has realized the utility model discloses spacing good to the needle valve, the needle valve connecting piece is avoided appearing breaking away from because of high water pressure takes place to cause the incident.

The present invention may be further configured in a preferred embodiment as: the longitudinal support is provided with an auxiliary screwing device for rotating the first nut and the second nut.

Through adopting above-mentioned technical scheme, supplementary screwing device can be more laborsaving the completion to the sealed operation of first side mouth of pipe and second side takeover.

The present invention may be further configured in a preferred embodiment as: the longitudinal support piece is provided with a through hole; the auxiliary screwing device comprises a screwing rod connected with the through hole in a penetrating mode, a rotating wheel fixedly connected to the screwing rod and back to the circumferential direction of one end of the needle valve, and an embedding groove formed in the screwing rod, faces to the bottom face of one end of the needle valve, and can be fixedly connected with the first nut and the second nut in an embedding mode.

Through adopting above-mentioned technical scheme, the gomphosis groove of the pole of screwing and first nut (or second nut) gomphosis rotate the swiveling wheel can be laborsaving with first nut and first side takeover mouth sealing connection (second nut and second side takeover mouth sealing connection).

The present invention may be further configured in a preferred embodiment as: the screwing rod is provided with a plurality of threaded holes which uniformly surround the central axis of the embedding groove and are communicated with the embedding groove; the screwing rod is connected with a clamping bolt in threaded connection with the threaded hole.

Through adopting above-mentioned technical scheme, a plurality of clamping bolts butt first nut (or second nut) outer wall respectively, prevent that first nut from breaking away from the gomphosis groove of screwing in the pole and influencing first nut (or second nut) sealed effect of screwing.

The present invention may be further configured in a preferred embodiment as: and protective plates are connected between the longitudinal supporting pieces in a sliding manner.

Through adopting above-mentioned technical scheme, the personnel injury that the connecting piece sputter that the guard plate can further prevent to take place when testing in the operation panel caused.

To sum up, the utility model discloses a following beneficial technological effect:

through the needle valve, the water suction pump, the test board, the hydraulic machine, the push plate, the water tank, the control electronic box and the test device main body, the needle valve is fixed on the test board, and the top sealing element is pressed by the push plate, so that the safety accident of personnel caused by the flying-out of a connecting piece on the needle valve is prevented; and the mechanical auxiliary test is more time-saving and labor-saving.

Through supplementary screwing device, can be more laborsaving the completion to the sealed operation of first side joint pipe mouth and second side joint pipe, and can practice thrift test time.

Through the guard plate, personnel's injury that the connecting piece sputter that takes place when can further preventing to test in the operation panel caused.

Drawings

Fig. 1 is a schematic view of a prior art structure.

FIG. 2 is a schematic overall structure diagram of the first embodiment;

FIG. 3 is an enlarged partial schematic view at A in FIG. 2;

FIG. 4 is a schematic overall structure diagram of the second embodiment;

FIG. 5 is an enlarged partial schematic view at B in FIG. 4;

fig. 6 is a schematic view of a partial structure of a needle valve, showing primarily friction enhancing ribs.

In the figure, 1, a needle valve; 11. a bottom water inlet hole; 12. a water outlet hole at the top; 120. a seal member; 13. a first side pipe orifice; 14. a second side pipe orifice; 15. a first nut; 16. a second nut; 2. a test device main body; 20. a protection plate; 21. an operation table; 22. a support frame; 221. a longitudinal support; 222. a transverse bearing plate; 3. a test bench; 30. a bearing plate; 31. a bottom seal; 311. a water flow channel; 32. a top seal; 321. friction increasing ribs; 33. lifting the plate; 34. a connecting pipe; 35. connecting holes; 36. a water receiving pipe; 4. a hydraulic press; 41. a push rod; 42. pushing the plate; 421. a limiting groove; 422. a shock-absorbing pad body; 5. a water pump; 6. a water tank; 7. controlling an electric box; 8. a shock absorber; 9. an auxiliary screwing device; 91. a through hole; 92. screwing the rod; 93. a rotating wheel; 94. a fitting groove; 941. a threaded hole; 942. and clamping the bolt.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows: referring to fig. 2, for the utility model discloses a needle valve water pressure test equipment, including testing arrangement main part 2, testing arrangement main part 2 includes operation panel 21 and fixed connection in the support frame 22 of operation panel 21, and support frame 22 includes two vertical support piece 221 that are parallel to each other and the horizontal bearing plate 222 of fixed connection between vertical support piece 221. The transverse bearing plate 222 is in bolted connection with the hydraulic machine 4 of which the push rod 41 faces the operating platform 21; the hydraulic machine 4 is connected with a control electric box 7 for controlling the hydraulic machine 4 to lift; a push plate 42 is fixedly connected to a push rod 41 of the hydraulic machine 4 in abutment with the surface of the top seal 32. The operation table 21 is fixedly connected with a test table 3 for the needle valve 1 to be arranged and communicated with the bottom water inlet hole 11 of the needle valve 1.

Referring to fig. 2, in conjunction with fig. 3, the needle valve 1 includes a bottom water inlet hole 11, a top water outlet hole 12, a first side nozzle 13, a second side nozzle 14 symmetrical about a central axis of the bottom water inlet hole 11, and a top sealing member 32 sealingly coupled to the top water outlet hole 12. When the needle valve 1 is used for water pressure testing, the water outlet hole 12 at the top of the needle valve 1 is hermetically connected with the top sealing element 32; the needle valve 1 is connected with a first nut 15 in threaded connection with the first side connecting pipe opening 13; the needle valve 1 is connected with a second nut 16 which is in threaded connection with the second side pipe opening 14 and the central axis of which coincides with the central axis of the first nut 15. The test bench 3 comprises a bearing plate 30 fixedly connected to the operation bench 21, and the bearing plate 30 is fixedly connected with a lifting plate 33 used for lifting the height to be conveniently observed; the lifting plate 33 is fixedly connected with four bottom sealing elements 31 which are communicated with each other, and the bottom sealing elements 31 are in sealing threaded connection with the bottom water inlet holes 11 to realize the communication between the test bench 3 and the needle valve 1. The test bench 3 is also communicated with a water pump 5, preferably a variable-frequency booster water pump capable of adjusting the water pressure of the outlet water; the water pump 5 is communicated with a water tank 6. Water supply method of needle valve 1: the single bottom seal 31 is provided with a water flow passage 311; a connection pipe 34 connected between the adjacent bottom sealing members 31 and communicating with the respective water flow passages 311 of the bottom sealing members 31; one of the bottom sealing members 31 is provided with a connecting hole 35 communicated with the water flow passage 311; the bottom sealing element 31 is connected with a water receiving pipe 36 which is in threaded sealing connection with the connecting hole 35; one end of the water receiving pipe 36 is connected with the bottom sealing element 31, and the other end of the water receiving pipe is in sealing threaded connection with the water suction pump 5, so that the water pressure test of the needle valve 1 under the effect of regulating the water pressure by the water suction pump 5 is realized. The connection can be dismantled to the water receiving pipe 36, conveniently maintains and overhauls the utility model discloses, use cost has been reduced.

The operation demonstration of the first embodiment: the needle valve 1 is first rotated to be screwed to the bottom seal 31; the first side pipe connecting port 13 is connected with a first nut 15 in a threaded mode, and the second side pipe connecting port 14 is connected with a second nut 16 in a threaded mode; then a top sealing element 32 is connected on the top water outlet hole 12 in a threaded sealing mode; and starting the hydraulic machine 4 again to enable the push plate 42 to be tightly abutted to the top sealing element 32, finally communicating the water receiving pipe 36 with the test bench 3, and starting the water suction pump 5 to perform a water pressure test.

The second embodiment: the difference between the second embodiment and the first embodiment is: referring to fig. 4, in order to support the hydraulic machine 4 smoothly, two dampers 8 are hinged between the longitudinal support member 221 and the transverse bearing plate 222, and are symmetrical about the vertical center line of the transverse bearing plate 222, and one end of each damper 8 is hinged to the side wall of the longitudinal support member 221 and the other end of each damper 8 is hinged to the lower surface of the transverse bearing plate 222. Referring to fig. 5, in order to further prevent the safety accident caused by the separation of the top sealing member 32 from the needle valve 1 due to excessive water pressure, the push plate 42 is provided with a limit groove 421 engaged with the top sealing member 32; a shock absorbing pad 422 sleeved on the top sealing element 32 is arranged in the limiting groove 421. The surface of the top seal 32 that abuts the push plate 42 is provided with friction enhancing ribs 321 (identifying figure 6). In order to prevent safety accidents caused by quality problems of the needle valve 1 in the testing process, a protection plate 20 is connected between the longitudinal supporting pieces 221 in a sliding mode, and the protection plate 20 is made of glass fiber reinforced plastics; after the needle valve 1 is attached to the test device body 2, the protection plate 20 is slid to abut against the operation table 21.

Referring to fig. 4, in order to facilitate controlled tightening of the first and

second nuts

15 and 16, the longitudinal support 221 is provided with auxiliary tightening means 9 for rotating the first and

second nuts

15 and 16. The longitudinal support member 221 is provided with a through hole 91 with a central axis coinciding with the central axis of the first nut 15; the auxiliary screwing device 9 comprises a screwing rod 92 connected with the through hole 91 in a penetrating manner, and a rotating wheel 93 convenient for regulating and controlling the screwing degree of the first nut 15 is fixedly connected to one end, back to the needle valve 1, of the screwing rod 92 in the circumferential direction; the tightening rod 92 has a fitting groove 94 formed in a bottom surface thereof facing one end of the needle valve 1, and the fitting groove is capable of being fixedly connected to the first nut 15 and the second nut 16. The cross-sectional shape of the fitting groove 94 is the same as the cross-sectional shape of the first nut 15 (second nut 16); the fitting groove 94 has a depth to accommodate the first side connection pipe (second side connection pipe) of the needle valve 1.

Referring to fig. 5, in order to ensure that the tightening rod 92 effectively controls the tightening degree of the first nut 15 and the second nut 16, the tightening rod 92 is provided with a plurality of threaded holes 941 uniformly surrounding the central axis of the fitting groove 94 and communicating with the fitting groove 94; the tightening rod 92 is connected to a clamping bolt 942 that is screwed into the threaded hole 941 and can abut against the first nut 15 or the second nut 16.

The operation of the second embodiment demonstrates: firstly, the needle valve 1 is connected (temporarily not screwed) with the bottom sealing element 31, the first side connecting pipe opening 13 is connected with the first nut 15 in a threaded manner, and the first nut 15 is screwed on the first side connecting pipe opening 13 by rotating the screwing rod 92; the needle valve 1 is rotated around the bottom sealing member 31 to adjust the second side pipe opening 14 to be aligned with the screwing rod 92, the second side pipe opening 14 is connected with the second nut 16 in a threaded mode, and the second nut 16 is screwed to the second side pipe opening 14 by rotating the screwing rod 92; then the needle valve 1 is rotated to be tightly connected with the bottom sealing element 31, and the top sealing element 32 is connected with the top water outlet hole 12 in a threaded sealing mode; and starting the hydraulic machine 4 again to enable the push plate 42 to be tightly abutted to the top sealing element 32, finally communicating the water receiving pipe 36 with the test bench 3, and starting the water suction pump 5 to perform a water pressure test.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A needle valve hydraulic pressure test equipment, includes first nut (15) with first side mouth of pipe (13) threaded connection and with second nut (16) of second side mouth of pipe (14) threaded connection, its characterized in that: the testing device comprises a testing device main body (2), wherein the testing device main body (2) is provided with a testing table (3) for the needle valve (1) to be arranged and communicated with a water inlet hole (11) at the bottom of the needle valve (1); the test board (3) is communicated with a water pump (5); the water pump (5) is communicated with a water tank (6); the needle valve (1) comprises a top sealing element (32) which is connected with the top water outlet hole (12) in a sealing way; the testing device body (2) is provided with a hydraulic machine (4) for abutting against the top sealing element (32); a push rod (41) of the hydraulic machine (4) is fixedly connected with a push plate (42) which is abutted against the surface of the top sealing element (32).

2. The needle valve hydraulic pressure test apparatus as set forth in claim 1, wherein: the test bench (3) comprises a bearing plate (30) fixedly connected to the test device main body (2), a lifting plate (33) fixedly connected to the bearing plate (30) and a plurality of bottom sealing elements (31) fixedly connected to the lifting plate (33) and communicated with each other, wherein the bottom sealing elements (31) are in sealing threaded connection with the bottom water inlet holes (11).

3. The needle valve hydraulic pressure test apparatus as set forth in claim 2, wherein: a water flow channel (311) is formed in each bottom sealing element (31); a connecting pipe (34) communicated with the water flow channel (311) of each bottom sealing piece (31) is arranged between the adjacent bottom sealing pieces (31); one of the bottom sealing pieces (31) is provided with a connecting hole (35) communicated with the water flow channel (311); the bottom sealing piece (31) is connected with a water receiving pipe (36) which is in threaded sealing connection with the connecting hole (35); one end of the water receiving pipe (36) is connected with the bottom sealing element (31) and the other end is connected with the water pump (5) in a sealing and threaded manner.

4. The needle valve hydraulic pressure test apparatus as set forth in claim 3, wherein: the push plate (42) is provided with a limit groove (421) embedded with the top sealing element (32); a shock absorption pad body (422) sleeved on the circumferential direction of the top sealing element (32) is arranged in the limiting groove (421); the surface of the top sealing element (32) which is abutted against the push plate (42) is provided with friction increasing ribs (321).

5. The needle valve hydraulic pressure test apparatus as set forth in claim 3, wherein: the testing device main body (2) comprises an operating platform (21) and a supporting frame (22) fixedly connected to the operating platform (21), the supporting frame (22) comprises two longitudinal supporting pieces (221) which are parallel to each other and a transverse bearing plate (222) fixedly connected between the longitudinal supporting pieces (221), and the transverse bearing plate (222) is in bolt connection with the hydraulic machine (4); a shock absorber (8) is hinged between the longitudinal supporting piece (221) and the transverse bearing plate (222).

6. The needle valve hydraulic pressure test apparatus as set forth in claim 5, wherein: the longitudinal support (221) is provided with an auxiliary screwing device (9) for rotating the first nut (15) and the second nut (16).

7. The needle valve hydraulic pressure test apparatus as set forth in claim 6, wherein: the longitudinal supporting piece (221) is provided with a through hole (91); the auxiliary screwing device (9) comprises a screwing rod (92) connected with the through hole (91) in a penetrating mode, a rotating wheel (93) fixedly connected to the screwing rod (92) and back to the circumferential direction of one end of the needle valve (1), and a tabling groove (94) which is formed in the bottom face, facing the bottom face of one end of the needle valve (1), of the screwing rod (92) and can be fixedly connected with the first nut (15) and the second nut (16) in a tabling mode.

8. The needle valve hydraulic pressure test apparatus as set forth in claim 7, wherein: the screwing rod (92) is provided with a plurality of threaded holes (941) which uniformly surround the central axis of the embedding groove (94) and are communicated with the embedding groove (94); the tightening rod (92) is connected with a clamping bolt (942) which is in threaded connection with the threaded hole (941).

9. The needle valve hydraulic pressure test apparatus as set forth in claim 5, wherein: and a protection plate (20) is connected between the longitudinal supporting pieces (221) in a sliding way.