CN211777966U

CN211777966U - Ultrahigh-pressure mechanical safety valve bank with exhaust function

Info

Publication number: CN211777966U
Application number: CN202020236269.0U
Authority: CN
Inventors: 付金库; 刘世伟
Original assignee: Tianjin Chenlong Heavy Industry Machinery Co ltd
Current assignee: Tianjin Chenlong Heavy Industry Machinery Co ltd
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-10-27
Anticipated expiration: 2030-03-02

Abstract

The utility model relates to a take exhaust function's superhigh pressure machinery safety valve group, including safety valve seat, needle, go up the valve body, lower valve body, elbow, link up on the safety valve seat lateral wall and be equipped with the needle mounting hole, lower valve body one end and the perpendicular sealing contact of safety valve seat lateral wall, go up the valve body other end and push up and be equipped with the briquetting for go up the valve body, lower valve body all is fixed with the safety valve seat is perpendicular, inside the needle is located valve body, lower valve body, the annular is equipped with a dog on the needle, the dog with lower valve body inner wall sealing contact is equipped with blocking mechanism on the briquetting, the needle top by blocking mechanism blocks, thereby makes the needle mounting hole blocked by the sealed of needle one end, link up on the lower valve body lateral wall and be equipped with the elbow, and when the needle top was blocked by blocking mechanism, the dog. The utility model discloses simple structure, low cost, practicality are high.

Description

Ultrahigh-pressure mechanical safety valve bank with exhaust function

Technical Field

The utility model belongs to the technical field of high-pressure transport, especially, relate to a take exhaust function's superhigh pressure mechanical safety valves.

Background

With the progress of scientific technology and the rapid development of society in the new century, the investment of infrastructure is more and more increased in each country. In order to meet the construction requirements of various foundation foundations, more and more processes need water, cement paste and the like with the ultrahigh pressure of 40Mpa or even higher, and the medium is usually pressurized and conveyed by a high-pressure mud pump. The pressure protection device of the transmission is similar to a relief valve in a hydraulic system, or a metal diaphragm. When the pressure rises, the valve core is opened by a compression spring or the metal plate is broken, and the like, so that the pressure is relieved, and the safety of the pump body is protected. The method can be applied to clean water or cleaner media, the safety protection effect is greatly reduced or even fails once the clean water or cleaner media such as cement slurry and the like with corrosivity and easy solidification are encountered, and once the fluid output port is blocked, the pressure is instantaneously and violently raised and exploded a pipeline to cause safety accidents. For the high pressure plunger pump field; air can be mixed with the slurry at the initial start-up of the pump, and if the pressure is initially raised, various safety hazards can arise such as: 1. the slurry outlet pipe is thrown randomly and easily hurts people; 2. strong noise is generated due to uneven stress of the cylinder body suction plunger of the hydraulic section of the pump body; 3. the plunger is impacted by large uneven alternating load to damage the seal of the pump end; 4. the current of the control system is repeatedly and sharply fluctuated to damage electrical elements; 5. in severe cases, damage to the transmission is caused and therefore it must be initially vented.

Therefore, in view of these problems, it is important to provide an ultrahigh pressure mechanical safety valve assembly with an exhaust function.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a take exhaust function's superhigh pressure mechanical safety valves.

The utility model provides a its technical problem take following technical scheme to realize:

an ultrahigh pressure mechanical safety valve group with an exhaust function comprises a safety valve seat, a valve needle, an upper valve body, a lower valve body and an elbow, wherein the safety valve seat is of a hollow structure, a valve needle mounting hole is formed in the side wall of the safety valve seat in a penetrating manner, the upper valve body and the lower valve body are of hollow structures, one end of the lower valve body is in vertical sealing contact with the outer side wall of the safety valve seat, the other end of the lower valve body is in sealing contact with the upper valve body, a pressing block is arranged at the other end of the upper valve body in an upward pressing manner and is fixedly connected with the side wall of the safety valve seat through a connecting screw, so that the upper valve body and the lower valve body are both vertically fixed with the safety valve seat, the valve needle is positioned inside the upper valve body and the lower valve body, one end of the valve needle is positioned in the valve needle mounting hole in a sealing, the valve needle mounting hole is sealed and blocked by one end of the valve needle, an elbow is arranged on the side wall of the lower valve body in a penetrating mode, and when the top end of the valve needle is blocked by the blocking mechanism, the stop block blocks a channel between the safety valve seat and the elbow.

Furthermore, a flow disturbing net is installed at the outlet end of the safety valve seat, and the outlet end of the safety valve seat is connected with the high-pressure ball valve through an end straight joint.

Furthermore, the blocking mechanism comprises a first spring pin, a positioning block and a second spring pin, a through hole for placing the positioning block is formed in the pressing block, the first spring pin and the second spring pin penetrate through the pressing block and install the positioning block in the through hole, and the top end of the valve needle is blocked by the positioning block; when the valve needle moves outwards under the action of pressure, the top end of the valve needle shears the second spring pin, and the positioning block rotates around the first spring pin, so that the valve needle moves outwards under the action of pressure, and liquid in the safety valve seat is discharged through the elbow.

Furthermore, the longitudinal section of the valve needle mounting hole is of a convex structure, and the valve needle is in sealing contact with the valve needle mounting hole through an annular gasket.

Further, the stop block is in sealing contact with the inner wall of the lower valve body through an annular gasket.

Furthermore, a first sealing ring and a second sealing ring are respectively arranged between the valve needle and the inner wall of the upper valve body and between the upper valve body (11) and the lower valve body.

Further, the first spring pin diameter is larger than the second spring pin diameter.

Further, the number of the second spring pins is at least one.

The utility model has the advantages that:

1. the utility model discloses a pressure medium is terminal surface under with pressure signal transmission needle, and upward power is given for the second spring catch at top to the needle under the pressure effect, and when the value of this power rises to the two-sided shearing force of second spring catch, second spring catch can automatic cutout, leads to the needle to move up to the top, and the lower part of needle breaks away from the lip of annular packing ring completely this moment, and high-pressure liquid medium will spout rapidly from the elbow for thick liquid system pressure descends;

2. the utility model is applied to high-pressure output terminals such as slurry pumps, water pumps and the like, and can exhaust the pipeline in the early stage through the ball valve, thereby reducing the vibration of the pump body and improving the stability of the high work;

4. the utility model discloses the simple used repeatedly who changes the spring catch unlimited time of accessible has simple structure, low cost, characteristics that the practicality is high.

Drawings

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus are not intended to limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.

Fig. 1 is a front view of an ultra-high pressure mechanical safety valve set with an exhaust function according to an embodiment of the present invention;

fig. 2 is a left side view of an ultra-high pressure mechanical safety valve set with an exhaust function according to an embodiment of the present invention;

fig. 3 is a top view of an ultra-high pressure mechanical safety valve set with an exhaust function according to an embodiment of the present invention;

Detailed Description

First, it should be noted that the specific structures, features, advantages, etc. of the present invention will be described in detail below by way of example, but all the descriptions are only for illustrative purpose and should not be construed as forming any limitation to the present invention. Furthermore, any single feature described or implicit in any embodiment or any single feature shown or implicit in any drawing may still be combined or subtracted between any of the features (or equivalents thereof) to obtain still further embodiments of the invention that may not be directly mentioned herein. In addition, for the sake of simplicity, the same or similar features may be indicated in only one place in the same drawing.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The present invention will be described in detail with reference to fig. 1 to 3.

Example 1

Fig. 1 is a front view of an ultra-high pressure mechanical safety valve set with an exhaust function according to an embodiment of the present invention; fig. 2 is a left side view of an ultra-high pressure mechanical safety valve set with an exhaust function according to an embodiment of the present invention; fig. 3 is a top view of an ultra-high pressure mechanical safety valve set with an exhaust function according to an embodiment of the present invention; as shown in fig. 1-3, the extra-high pressure mechanical safety valve set with an exhaust function provided in this embodiment includes a safety valve seat 3, a valve needle 10, an upper valve body 11, a lower valve body 14, and an elbow 19, where the safety valve seat 3 is of a hollow structure, a valve needle mounting hole is formed in a side wall of the safety valve seat 3, the upper valve body 11 and the lower valve body 14 are both of a hollow structure, and one end of the lower valve body 14 is in vertical sealing contact with an outer side wall of the safety valve seat 3, in this embodiment, a sealing ring 4 is disposed between the lower valve body 14 and the outer side wall of the safety valve seat 3, and the other end of the lower valve body is in sealing contact with the upper valve body 11, in this embodiment, a sealing ring 13 is disposed between the upper valve body 11 and the lower valve body 14, a pressing block 9 is disposed at the other end of the upper valve, The lower valve body 14 is fixed perpendicular to the safety valve seat 3, the valve needle 10 is located inside the upper valve body 11 and the lower valve body 14, one end of the valve needle 10 is located inside the valve needle mounting hole in a sealing manner, in this embodiment, the longitudinal section of the valve needle mounting hole is of a "convex" type structure, the valve needle 10 is in sealing contact with the valve needle mounting hole through an annular gasket 17, and the other end of the valve needle is in sealing contact with the inner wall of the upper valve body 11, in this embodiment, a sealing ring 12 is arranged between the valve needle 10 and the inner wall of the upper valve body 11, a stopper 20 is arranged on the valve needle 10 in an annular manner, the stopper 20 is in sealing contact with the inner wall of the lower valve body 14, in this embodiment, the stopper 20 is in sealing contact with the inner wall of the lower valve body 14 through an annular gasket 16, a blocking mechanism is arranged on the pressing block 9, the top end of the valve needle, an elbow 19 is arranged on the side wall of the lower valve body 14 in a penetrating way, and when the top end of the valve needle 10 is blocked by the blocking mechanism, the stop 20 blocks the passage between the safety valve seat 3 and the elbow 19.

It should be noted that, in this embodiment, the blocking mechanism includes a first spring pin 6, a positioning block 7, and a second spring pin 8, a through hole for placing the positioning block 7 is formed on the pressing block 9, the first spring pin 6 and the second spring pin 8 pass through the pressing block 9 and install the positioning block 7 in the through hole, specifically, the first spring pin 6 and the second spring pin 8 pass through the pressing block 9 and the positioning block 7, so that the positioning block 7 is located in the through hole and blocks the through hole, it should be noted that the diameter of the first spring pin 6 is greater than that of the second spring pin 8, the number of the second spring pins 8 is at least one, and the top end of the valve needle 10 is blocked by the positioning block 7; when the valve needle 10 moves outwards under the action of pressure, the top end of the valve needle 10 shears the second spring pin 8, and the positioning block 7 rotates around the first spring pin 6, so that the valve needle 10 moves outwards under the action of pressure, and liquid in the safety valve seat 3 is discharged through the elbow 19.

In order to further expand the function of the ultrahigh pressure mechanical safety valve group, it can be considered that a flow disturbing net 15 is installed at the outlet end of the safety valve seat 3, and the outlet end of the safety valve seat 3 is connected with a high pressure ball valve 18 through an end straight joint.

For example, in the embodiment, when in use, the inlet end of the safety valve seat 3 is connected to the pressure output end 1 through the end through joint 2, the pressure medium transmits a pressure signal to the lower end surface of the valve needle 10, the valve needle 10 exerts an upward force on the second spring pin 8 at the top under the action of the pressure, when the force rises to the double-sided shearing force of the second spring pin 8, the second spring pin 8 will automatically cut off, causing the valve needle 10 to move up to the top, at this time, the lower part of the valve needle 10 is completely separated from the lip of the ring-shaped gasket 17, the high-pressure liquid medium will be rapidly ejected from the elbow 19, and the pressure of the slurry system drops to 0, thereby protecting the safety accident caused by sudden rise of the system pressure due to external factors; when the high-pressure air-suction-type high-pressure pump is applied to plunger type high-pressure pump products such as a slurry pump, a water pump and the like, the vibration and large pressure fluctuation are easily caused by unstable equipment starting due to the fact that a large amount of air is contained in liquid sucked in the initial stage, air bubbles can be scattered through the turbulence net 15 inside the high-pressure pump and exhausted through the high-pressure ball valve 18, in addition, when the system is stopped due to external factors in a high-pressure system, manual active pressure relief can be carried out by opening the high-pressure ball.

The invention discloses an installation method of an ultrahigh-pressure mechanical safety valve group, which comprises the following steps: installing a ring-shaped gasket 17 on a valve needle installation hole of a safety valve seat 3, then installing a lower valve body 14 and a sealing ring 4 on the safety valve seat 3, installing a valve needle 10 and a ring-shaped gasket 16 in the lower valve body 14, installing an upper valve body provided with

sealing rings

12 and 13 according to the position shown in figure 1, connecting a pressing block 9 on the safety valve seat 3 through a connecting screw 5, placing a positioning block 7 in a through hole of the pressing block 9, respectively introducing a first spring pin 6 and a second spring pin 8, installing a flow disturbing net 15 at the right end of the safety valve seat 3, screwing an adjacent end straight-through joint 2, installing a high-pressure ball valve 18, an elbow 19 and the end straight-through joints 2 at two ends, and finishing the installation.

The above embodiments are described in detail, but the above description is only for the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. The utility model provides a take exhaust function's superhigh pressure mechanical safety valves which characterized in that: the safety valve comprises a safety valve seat (3), a valve needle (10), an upper valve body (11), a lower valve body (14) and an elbow (19), wherein the safety valve seat (3) is of a hollow structure, a valve needle mounting hole is formed in the side wall of the safety valve seat (3) in a through mode, the upper valve body (11) and the lower valve body (14) are of hollow structures, one end of the lower valve body (14) is in vertical sealing contact with the outer side wall of the safety valve seat (3), the other end of the lower valve body is in sealing contact with the upper valve body (11), a pressing block (9) is arranged at the other end of the upper valve body (11) in an upward pressing mode, the pressing block (9) is fixedly connected with the side wall of the safety valve seat (3) through a connecting screw (5), so that the upper valve body (11) and the lower valve body (14) are vertically fixed with the safety valve seat (3), the valve needle (10) is located inside the upper, the other end with go up valve body (11) inner wall sealing contact, the annular is equipped with a dog (20) on needle (10), dog (20) with lower valve body (14) inner wall sealing contact, be equipped with blocking mechanism on briquetting (9), needle (10) top by blocking mechanism blocks, thereby makes the needle mounting hole is blocked by needle (10) one end sealing, link up on lower valve body (14) lateral wall and be equipped with elbow (19), and when needle (10) top by when blocking mechanism blocks, dog (20) block the passageway between safety valve seat (3) and elbow (19).

2. The ultrahigh pressure mechanical safety valve bank with the exhaust function as claimed in claim 1, wherein: the outlet end of the safety valve seat (3) is provided with a flow disturbing net (15), and the outlet end of the safety valve seat (3) is connected with a high-pressure ball valve (18) through an end straight joint.

3. The ultrahigh pressure mechanical safety valve bank with the exhaust function as claimed in claim 1, wherein: the blocking mechanism comprises a first spring pin (6), a positioning block (7) and a second spring pin (8), a through hole for placing the positioning block (7) is formed in the pressing block (9), the first spring pin (6) and the second spring pin (8) penetrate through the pressing block (9) and install the positioning block (7) in the through hole, and the top end of the valve needle (10) is blocked by the positioning block (7); when the valve needle (10) moves outwards under the action of pressure, the top end of the valve needle (10) shears the second spring pin (8), and the positioning block (7) rotates around the first spring pin (6), so that the valve needle (10) moves outwards under the action of pressure, and liquid in the safety valve seat (3) is discharged through the elbow (19).

4. The ultrahigh pressure mechanical safety valve bank with the exhaust function as claimed in claim 1, wherein: the valve needle mounting hole longitudinal section is "protruding" type structure, valve needle (10) pass through annular packing ring (17) with the sealed contact of valve needle mounting hole.

5. The ultrahigh pressure mechanical safety valve bank with the exhaust function as claimed in claim 1, wherein: the stop block (20) is in sealing contact with the inner wall of the lower valve body (14) through an annular gasket (16).

6. The ultrahigh pressure mechanical safety valve bank with the exhaust function as claimed in claim 1, wherein: and a first sealing ring (12) and a second sealing ring (13) are respectively arranged between the valve needle (10) and the inner wall of the upper valve body (11) and between the upper valve body (11) and the lower valve body (14).

7. The ultrahigh-pressure mechanical safety valve bank with the exhaust function as claimed in claim 3, wherein: the diameter of the first spring pin (6) is larger than that of the second spring pin (8).

8. The ultrahigh-pressure mechanical safety valve bank with the exhaust function as claimed in claim 3, wherein: the number of the second spring pins (8) is at least one.