CN210800727U

CN210800727U - Double-circuit gas pressure regulating box

Info

Publication number: CN210800727U
Application number: CN201921625305.6U
Authority: CN
Inventors: 彭世洪
Original assignee: Qianwei County Xinan Gas Valve Door Co ltd
Current assignee: Qianwei County Xinan Gas Valve Door Co ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-06-19
Anticipated expiration: 2029-09-26

Abstract

The utility model discloses a double-path gas pressure regulating box, which relates to the technical field of gas transmission and distribution facilities and comprises a main path component of a pressure regulator and an auxiliary path pressure regulator; the main circuit component and the secondary circuit voltage regulator are both provided with an air inlet end and an air outlet end; a main path air inlet double-path ball valve is connected between the air inlet end of the main path component of the pressure regulator and the air inlet end of the auxiliary path pressure regulator; a main path air outlet double-path ball valve is connected between the air outlet end of the main path component of the pressure regulator and the air outlet end of the auxiliary path pressure regulator; the main path air inlet double-path ball valve and the main path air outlet double-path ball valve are the same in structure and are double-path ball valves. The utility model discloses the problem that the complicated occupation space of current double-circuit gas pressure regulating box structure is big has effectively been solved.

Description

Double-circuit gas pressure regulating box

Technical Field

The utility model relates to a gas transmission and distribution facility technical field, concretely relates to double-circuit gas pressure regulating box.

Background

The gas pressure regulating box is a device for keeping the outlet gas at a predetermined pressure by an automatic regulator of a regulating valve in a gas transmission and distribution facility. The gas pressure regulating box is a device which can keep the downstream pressure stable no matter how the flow rate of gas and the upstream pressure change. Some filter screens of the gas pressure regulating box are easy to block after being used for a period of time, and in order to ensure safe gas utilization, the gas pressure regulating device needs to be checked regularly, and if abnormal conditions are found, gas stopping and maintenance are needed. The gas pressure regulating box that the tradition used adopts the one-way design usually, and the maintenance of stopping the gas makes the user not have the gas available, brings inconvenience for user's daily life. Meanwhile, the maintenance time is limited, inconvenience is brought to maintenance operation of workers, and the situation that the workers are in hurry and cannot be completely maintained easily occurs.

In order to solve the problem that no gas is available for a user during maintenance, the conventional gas pressure regulating tank generally adopts a two-way design and comprises a main path component of a pressure regulator and a secondary path pressure regulator, wherein the main path component of the pressure regulator is provided with an air inlet end and an air outlet end; according to the existing double-path gas pressure regulating box, the air inlet end of a pressure regulating main path component is sequentially connected with a main path air inlet flange ball valve, a main path air inlet tee joint, an auxiliary path air inlet ball valve and an auxiliary path valve body and then connected with the air inlet end of an auxiliary path pressure regulator, and the air outlet end of the auxiliary path pressure regulator is sequentially connected with an auxiliary path air outlet ball valve, a main path air outlet tee joint and a main path air outlet butterfly valve and then connected with the air outlet end of a main path component of the pressure regulator.

Although the existing two-way gas pressure regulating tank can enable the secondary circuit to continue to supply gas during main circuit maintenance through the two-way design of the main circuit component and the secondary circuit pressure regulator of the pressure regulator, the existing two-way gas pressure regulating tank is too complex in structure and needs to occupy larger space; the number of connected parts is too many, and the number of the connection sealing surfaces among all the connecting parts is large, so that the risk of gas leakage is increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides a double-circuit gas pressure regulating box to solve the complicated big problem of occupation space of current double-circuit gas pressure regulating box structure.

In order to solve the above problems, the following scheme is provided:

the two-way gas pressure regulating box in the scheme comprises a main path component and an auxiliary path pressure regulator of the pressure regulator; the main circuit component and the secondary circuit voltage regulator are both provided with an air inlet end and an air outlet end; a main path air inlet double-path ball valve is connected between the air inlet end of the main path component of the pressure regulator and the air inlet end of the auxiliary path pressure regulator; a main path air outlet double-path ball valve is connected between the air outlet end of the main path component of the pressure regulator and the air outlet end of the auxiliary path pressure regulator; the main path air inlet double-path ball valve and the main path air outlet double-path ball valve are the same in structure and are double-path ball valves.

The scheme has the advantages that:

the double-path gas pressure regulating box is used for controlling and regulating regional gas output pressure. The scheme adopts a modular design and a standardized optimized combination, and replaces a main intake flange ball valve, a main intake tee and an auxiliary intake ball valve through a main intake double-way ball valve; the main path air outlet double-path ball valve replaces a sub-path air outlet ball valve, a main path air outlet tee joint and a main path air outlet butterfly valve. Effectively reduced adapting unit quantity in the double-circuit gas surge tank for the structure is compacter, and weight and occupation space all become littleer, are favorable to the installation more, and more importantly has effectively reduced the sealed face quantity of connection, has greatly reduced the risk that the gas leaked, increases the security of double-circuit gas surge tank.

Furthermore, a secondary air inlet elbow joint is connected between the main air inlet double-way ball valve and the secondary air inlet end of the secondary pressure regulator.

The main air inlet double-path ball valve is communicated with the auxiliary air pressure regulator through the auxiliary air inlet elbow joint.

Furthermore, an auxiliary path valve body and an auxiliary path air outlet elbow joint are sequentially connected between the air outlet end of the auxiliary path pressure regulator and the main path air outlet double-path ball valve.

The air outlet end of the secondary pressure regulator is connected with a secondary valve body, the secondary valve body is connected with a secondary air outlet elbow connector, and the secondary air outlet elbow connector is connected with a main air outlet double-way ball valve.

Further, the two-way ball valve comprises a main path channel and a branch path channel; a main ball valve for opening or closing the main path channel is arranged on the main path channel; and the branch passage is provided with an auxiliary ball valve for opening or closing the branch passage.

Through adjusting main ball valve and vice ball valve, open or close main road passageway or vice way passageway, and then select main road work or vice way work, the continuation supply that can not influence the gas when the convenience overhauls.

Furthermore, the auxiliary ball valve comprises a valve rod extending out of the branch passage, and an elastic sealing element is arranged on the valve rod; the resilient seal is disposed between the valve stem and the bypass passage wall.

Through the elastic sealing element, the valve rod can also be in seamless connection with the channel wall of the branch channel under the condition that the valve rod can extend out of the branch channel, and the sealing performance is good.

Furthermore, an annular mounting groove for mounting the elastic sealing element is formed in the valve rod.

The resilient seal is mounted to the valve stem by an annular mounting groove.

Further, the annular mounting groove is two, sets up respectively in the one-third of valve rod axis and two-thirds department.

Two mounting grooves evenly distributed are on the valve rod, make and install the sealed effect better behind the elastic sealing element.

Furthermore, one end of the valve rod, which extends out of the branch passage, is connected with a driving mechanism for driving the valve rod.

The valve rod is driven by the driving mechanism, so that the labor is saved, and the operation is convenient.

The driving mechanism comprises a secondary handle and a connecting piece for connecting the valve rod and the secondary handle.

The auxiliary handle and the valve rod are connected through the connecting piece, and the lever principle is utilized, so that the auxiliary handle which forms a lever structure with the valve rod is more labor-saving to use.

The valve rod and the accessory way handle are connected with each other, the connection parts of the valve rod and the accessory way handle are respectively a groove and a protrusion matched in shape, external threads are arranged on the outer peripheral surfaces of the valve rod and the accessory way handle close to the connection parts, and the connecting piece is a locking nut in threaded connection with the valve rod and the accessory way handle respectively.

The valve rod and the secondary handle which are clamped together through the groove and the protrusion are firmly connected through the locking nut.

Further, the secondary air inlet elbow joint is of a bent hollow tubular structure.

The bypass air inlet elbow connector is of a simple bent hollow tubular structure, no valve is arranged inside the bypass air inlet elbow connector, all valve structures are concentrated in the air inlet double-way ball valve, the bypass air inlet elbow connector can adopt a simple universal elbow, replacement and maintenance are convenient, meanwhile, the elbow can be made as short as possible, the whole double-way gas pressure regulating box can be more compact, control and maintenance are more convenient, and cost is saved.

Further, the secondary air outlet elbow joint is of a bent hollow tubular structure.

Similarly, the secondary air outlet elbow joint adopts a simple general bent hollow tubular structure, and integrates the original valve into the air outlet double-way ball valve, so that the secondary air outlet elbow joint can be replaced by a general elbow, the cost is saved, and meanwhile, the secondary air outlet elbow joint is made as short as possible, so that the whole double-way gas pressure regulating box can be more compact, is more convenient to control and maintain, and saves the cost.

Drawings

Fig. 1 is a schematic structural view of a two-way gas pressure regulating tank provided in an embodiment of the present invention;

FIG. 2 is a schematic structural view of the two-way ball valve of FIG. 1;

fig. 3 is a cross-sectional view taken along the direction D-D of fig. 2.

Detailed Description

The following is further detailed by way of specific embodiments:

description of reference numerals: the main path component 1 of the pressure regulator, a main path air inlet double-way ball valve 2, a secondary path air inlet elbow joint 3, a secondary path pressure regulator 4, a secondary path valve body 5, a secondary path air outlet elbow joint 6, a main path air outlet double-way ball valve 7, a valve body 10, a valve cover 11, a main ball valve 12, a medium main path outlet 13, a branch path channel 20, a secondary ball valve 21, a medium secondary path outlet 23, a ball body 30, a valve rod 31, a secondary path 40 handle and a locking nut 41.

Example one

The embodiment is basically as shown in figure 1: this embodiment provides a double-circuit gas pressure regulating box, including the pressure regulator main road part 1, the main road double-circuit ball valve 2 that admits air, the bent joint 3 that admits air of accessory road, accessory road pressure regulator 4, accessory road valve body 5, the bent joint 6 and the main road double-circuit ball valve 7 of giving vent to anger of accessory road of loop connection in proper order.

Wherein, the air pressure gauge is arranged on the main circuit component 1 of the pressure regulator. The main path component of the pressure regulator is provided with an air inlet end and an air outlet end, the air inlet end of the main path component of the pressure regulator is hermetically connected with the main path air inlet double-ball valve 2, and the air outlet end of the main path component of the pressure regulator is hermetically connected with the main path air outlet double-ball valve 7. The main path inlet double ball valve 2 is hermetically connected with a sub path inlet elbow 3 which is basically bent by ninety degrees, and the main path outlet double ball valve 7 is connected with a sub path outlet elbow 6 which is also basically bent by ninety degrees. The auxiliary channel air outlet elbow joint 6 and the auxiliary channel air inlet elbow joint 3 are provided with joints with internal threads at one ends close to the auxiliary channel valve body 5 and are in threaded connection with the auxiliary channel valve body 5 through the joints. And the secondary valve body 5 is hermetically connected with a third opening of the secondary pressure regulator 4. An O-shaped sealing ring is arranged at each sealing joint to increase the sealing property.

The main path inlet double-way ball valve 2 and the main path outlet double-way ball valve 7 are identical in structure and are called double-way ball valves. The double-circuit ball valve includes main ball valve and vice ball valve, will originally need to install in the middle of the vice ball valve that the elbow connector and vice way of admitting air were given vent to anger in the elbow connector of vice way is concentrated to the double-circuit ball valve, make vice way elbow connector and vice way of admitting air give vent to anger the elbow connector can adopt simple crooked tubular structure can, make the connection structure in the whole surge tank can become compacter, not only can be convenient for control, can also shorten the connecting tube length between each component, save the cost.

The embodiment adopts the modularized design, optimized combination through standardization, through selecting for use two double-circuit balls as main road inlet double-circuit ball valve 2 and main road outlet double-circuit ball valve 7 respectively, a ball valve in the current double-circuit gas pressure regulating box has been replaced, a dish valve, a main road inlet tee, a main road outlet tee, a vice road inlet ball valve and a vice road outlet ball valve, realize reducing two sets of component element, reduce four sealed faces and make this embodiment scheme component element reduce to seven sets, make pressure regulating box equipment gross weight alleviate about 38Kg, make the structure compacter, the control point is more concentrated, use and maintain simple and convenient swift, resources are saved, reach reduce cost and reduce the point of can leaking, reduce the leak rate and improve the most general purpose of fail safe nature.

As shown in fig. 2 and 3, the two-way ball valve comprises a valve body and a valve cover. The valve body is of a tubular structure, is sleeved at the upper end of the valve cover and is in sealing connection, and an opening at the upper end of the valve body is called as a medium main path outlet. And a main ball valve for controlling the opening or closing of the medium main path outlet is arranged below the valve body close to the medium main path outlet. A branch passage communicated with the valve body is integrally formed on the valve body along the upstream direction of the medium flow direction line in the valve body passing through the main ball valve. The outlet of the branch passage is called as a medium secondary passage outlet, and a secondary ball valve for controlling the opening or closing of the medium secondary passage outlet is arranged at the position of the branch passage close to the medium secondary passage outlet.

An annular channel communicated with the branch channel is arranged between the valve body and the valve cover, and at least four through holes communicated with the annular channel are arranged on the side wall of the valve body. The included angle between the branch passage and the medium flow direction line in the valve body is smaller than or equal to 90 degrees, so that the fuel gas in the valve body can conveniently enter the branch passage.

Concretely, vice ball valve, including the spheroid and with the welded valve rod of spheroid. The pipe wall of the branch passage is provided with a valve rod hole for the valve rod to extend out of the branch passage. In a two-way ball valve, a branch passage for temporary gas supply is limited by installation space and design size, the diameter of a ball body is generally about 10-20mm, and the design size of a valve rod hole is about 8 mm.

Two annular mounting grooves are formed in the valve rod in the circumferential direction and are located in one third and two thirds of the axis of the valve rod respectively. And after the elastic sealing element is arranged in the valve rod hole along with the valve rod, the circumferential direction of the elastic sealing element is in a compression sealing state. After the elastic sealing element is arranged in the valve rod hole along with the valve rod, the compression amount of the circumferential side wall of the elastic sealing element is designed to be 0.1 mm-0.3 mm, so that the elastic sealing element and the valve rod are conveniently arranged in the valve rod hole, and the compression force formed in the circumferential direction of the elastic sealing element and the valve rod can form reliable sealing on the valve rod of the auxiliary ball valve.

In the embodiment, the valve rod hole of the auxiliary ball valve is a straight-through hole, the diameter of the valve rod is suitable for the aperture of the valve rod hole and is designed to be 6-8 mm, the processing difficulty can be obviously reduced compared with a special-shaped hole processed by a traditional sealing structure, and the valve rod and the elastic sealing element are convenient to install. The elastic sealing element is preferably an O-ring rubber seal.

The specific implementation manner of this embodiment is: a double-way ball valve is used as a main-path air inlet double-way ball valve to replace an original air inlet flange ball valve, a main-path air inlet tee joint and a secondary-path air inlet ball valve, a medium main-path outlet of the main-path air inlet double-way ball valve is in flange connection with an air inlet end of a main-path component of a pressure regulator according to the existing method, and a medium secondary-path outlet of the main-path air inlet double-way ball valve is directly in threaded connection with a secondary-path air inlet elbow joint. The two-way ball valve is used as a main path air outlet two-way ball valve to replace an original auxiliary path air outlet ball valve, a main path air outlet tee joint and a main path air outlet butterfly valve, a medium main path outlet of the main path air outlet two-way ball valve is connected with an air outlet end of a main path component of a pressure regulator through a flange according to the existing method, and a medium auxiliary path outlet of the main path air outlet two-way ball valve is directly connected with an auxiliary path air outlet elbow connector through threads. In order to increase the sealing performance, a sealing ring is added when the sealing surfaces are connected.

This embodiment passes through double-circuit ball valve and connection structure, makes whole double-circuit gas pressure regulating box structure become compacter, through reducing the component, reduces connecting tube's length, reduces cost and installation maintenance work load, through reducing sealed face number, can effectively reduce the gas and leak probability and use safe risk.

Compared with all domestic double-path gas pressure regulating boxes at present, the auxiliary path connecting structure where the auxiliary path pressure regulating part is located has the advantages of more components, complex assembly, more resource consumption and high production and maintenance cost; the leakage risk is high, more sealing surfaces are generated due to the connection of excessive component elements, the gas leakage probability is increased, and fatal defects such as structural use potential safety hazards are formed. The embodiment forms the double-path gas pressure regulating box with a new secondary path connecting structure, reduces the weight and 2 secondary path pressure regulating component elements by reducing 20 percent of the component elements, and leads the pressure regulating operation to be more convenient, quicker and more reliable; the total weight of the group pressure regulating box equipment is reduced by 38Kg, the structure is more compact and simpler, the resource consumption is less, and the production cost is fully reduced; after the number of the components is reduced, the quality of the pressure regulating box equipment is reduced, the quality is easier to control, the work is more reliable, and the maintenance cost is lower; the number of the components is reduced, so that the number of the connection sealing surfaces is effectively reduced, the gas leakage probability is effectively reduced, and the use is safer and more reliable; the embodiment has the advantages of high quality, low cost, more contribution to popularization of new product technology and the like.

Example two

In the embodiment, in order to open or close the auxiliary ball valve conveniently, the end part of the valve rod extending to the outer side of the branch passage is provided with a driving mechanism for driving the valve rod to rotate, specifically, the driving mechanism comprises an auxiliary passage handle and a locking nut, the end part of the valve rod extending out of the outer side of the branch passage is provided with a square head, the cross section size of the square head is smaller than that of the valve rod, the auxiliary passage handle is provided with a handle square hole matched with the square head, and the locking nut is used for fixing the auxiliary passage handle on the valve rod. The specific implementation mode is as follows: the auxiliary way handle matched with the square head at the end part of the valve rod is rotated to drive the valve rod to rotate, so that the ball body is driven to rotate around the axis of the valve rod in a 90-degree plane to open or close the auxiliary way valve, and the auxiliary way handle and the valve rod are convenient to disassemble and replace; and this technical scheme vice ball valve rod seal structure's design can avoid current sealing member to rely on the packing force compression deformation that lock nut provided to seal, and then avoids opening or close vice ball valve and appear the phenomenon that the packing force that the wrench loosening vice way valve rod top gland nut leads to providing the sealing member is unstable, improves the safety in utilization of the vice ball valve of branch road passageway.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. A two-way gas pressure regulating box comprises a main path component of a pressure regulator and a secondary path pressure regulator; the method is characterized in that: the main circuit component and the secondary circuit voltage regulator are both provided with an air inlet end and an air outlet end; a main path air inlet double-path ball valve is connected between the air inlet end of the main path component of the pressure regulator and the air inlet end of the auxiliary path pressure regulator; a main path air outlet double-path ball valve is connected between the air outlet end of the main path component of the pressure regulator and the air outlet end of the auxiliary path pressure regulator; the main path air inlet double-path ball valve and the main path air outlet double-path ball valve are the same in structure and are double-path ball valves.

2. The two-way gas pressure regulating tank of claim 1, wherein: and a secondary air inlet elbow joint is connected between the main air inlet double-path ball valve and the secondary air inlet end of the secondary pressure regulator.

3. The two-way gas pressure regulating tank of claim 1, wherein: and an auxiliary path valve body and an auxiliary path air outlet elbow joint are sequentially connected between the air outlet end of the auxiliary path pressure regulator and the main path air outlet double-path ball valve.

4. The two-way gas pressure regulating tank of claim 1, wherein: the two-way ball valve comprises a main path channel and a branch path channel; a main ball valve for opening or closing the main path channel is arranged on the main path channel; and the branch passage is provided with an auxiliary ball valve for opening or closing the branch passage.

5. The two-way gas pressure regulating tank of claim 4, wherein: the auxiliary ball valve comprises a valve rod extending out of the branch passage, and an elastic sealing element is arranged on the valve rod; the resilient seal is disposed between the valve stem and the bypass passage wall.

6. The two-way gas pressure regulating tank of claim 5, wherein: and the valve rod is provided with an annular mounting groove for mounting an elastic sealing element.

7. The two-way gas pressure regulating tank of claim 6, wherein: the annular mounting grooves are two and are respectively arranged at one third and two thirds of the axis of the valve rod.

8. The two-way gas pressure regulating tank of claim 5, wherein: one end of the valve rod, which extends out of the branch passage, is connected with a driving mechanism for driving the valve rod.

9. A two-way gas pressure regulating tank as defined in claim 2, wherein: the secondary air inlet elbow joint is of a bent hollow tubular structure.

10. A two-way gas pressure regulating tank as defined in claim 9, wherein: the secondary path air outlet elbow joint is of a bent hollow tubular structure.