CN212959993U

CN212959993U - Refrigerant double-meter set

Info

Publication number: CN212959993U
Application number: CN202020941309.1U
Authority: CN
Inventors: 郭定云
Original assignee: Zhejiang Weipeng Refrigeration Equipment Co ltd
Current assignee: Zhejiang Weipeng Refrigeration Equipment Co ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2021-04-13
Anticipated expiration: 2030-05-28

Abstract

The utility model provides a refrigerant pair of tables group belongs to mechanical technical field. It has solved the easy maloperation's of current table group problem. This two table groups of refrigerant is including the block that possesses the filler, be equipped with the cavity in the block and locate the high-pressure channel and the low pressure passageway of cavity both sides, the equal intercommunication cavity of entry of high-pressure channel and low pressure passageway, high-pressure channel and low pressure passageway export all are located the block surface, the cavity internal seal is fixed with and sets up side by side and all are annular two disk seats, and two disk seat bores communicate with high-pressure channel and low pressure passageway entry respectively, install the ball core between two disk seats, be equipped with the passageway that overflows that runs through and be L shape in the ball core, the filler is in between two disk seats, the block is equipped with the valve rod outward, the valve rod inner stretches into the block and is connected with the ball core, valve rod and block rotate and are connected and form sealedly between the two, it can make the hole that overflows the passageway both ends and. The refrigerant double-meter set is not easy to operate by mistake.

Description

Refrigerant double-meter set

Technical Field

The utility model belongs to the technical field of machinery, a manometer, especially a refrigerant pair of tables group for refrigerant pressure measurement is related to.

Background

In the debugging and maintenance of the automobile air conditioner, the refrigerant pressure of an air conditioning system needs to be measured, and a used detection instrument is generally a pointer type meter set or a digital display type meter set.

The existing meter group is as disclosed in chinese patent library a multifunctional refrigerant measurement digital display meter device [ application number: 201420394589.3, comprising a casing, a display screen on the casing, a circuit board in the casing, and an arithmetic unit, an A-D converter, a pressure sensor, a vacuum sensor, and a temperature sensor integrated on the circuit board; one end of each of the two leads is connected with the temperature sensor, and the other end of each of the two leads penetrates out of two sides of the shell and is electrically connected to the clamping arm holding the thermocouple pieces; the detection ends of the pressure sensor and the vacuum sensor are communicated with a high-pressure interface pipeline and a low-pressure interface pipeline below the shell, a high-pressure manual valve and a low-pressure manual valve are arranged on the shell corresponding to the high-pressure interface pipeline and the low-pressure interface pipeline, a glass mirror is arranged at the surface end of the shell between the high-pressure manual valve and the low-pressure manual valve, and a refrigerant access pipeline is arranged between the high-pressure interface pipeline and the low-pressure interface pipeline; and a power switch button, a mode conversion button, a light key and a vacuum degree button are arranged below the display screen on the end face of the shell.

When the digital display meter is used for measuring high pressure, the high-pressure manual valve needs to be opened, and the low-pressure manual valve needs to be closed; when measuring high pressure, the opposite is true; the above process is prone to misoperation, for example, when the high-pressure manual valve is opened, the low-pressure manual valve is still in an open state.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a refrigerant pair of tables group, the technical problem of solution is how to avoid the maloperation.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a two table groups of refrigerant, including the block that possesses the filler, be equipped with the cavity in the block and locate the high-pressure channel and the low pressure passageway of cavity both sides, the equal intercommunication cavity of entry of high-pressure channel and low pressure passageway, the export of high-pressure channel and low pressure passageway all is located the block surface, a serial communication port, the cavity internal seal is fixed with and sets up side by side and all is annular two disk seats, and the hole of two disk seats communicates with the entry of high-pressure channel and low pressure passageway respectively, install the ball core between two disk seats, be equipped with the passageway that overflows that runs through and be L shape in the ball core, the filler is in between two disk seats, the block is equipped with the valve rod outward, the inner of valve rod stretches into the block and is connected with the filler, valve rod and block rotate and be connected and form sealedly between the two, it can make the hole that.

Two pressure gauges for respectively detecting the pressure in the high-pressure channel and the low-pressure channel are arranged outside the block body; when in use, the refrigerant is injected from the filling port; when the refrigerant is at high pressure, the valve rod is rotated to enable the filling port to be communicated with the high-pressure channel, and the high-pressure refrigerant is discharged into the high-pressure channel through the flow channel and the corresponding inner hole of the valve seat and finally discharged through an outlet of the high-pressure channel; when the refrigerant is at low pressure, the valve rod is rotated to enable the filling port to be communicated with the low-pressure channel, and the low-pressure refrigerant is discharged into the low-pressure channel through the flow channel and the corresponding inner hole of the valve seat and finally discharged through the outlet of the low-pressure channel.

In this two table group, only need operate valve rod alright control filling mouth intercommunication low pressure passageway or high-pressure gallery once, and at every turn the operation back filling mouth only with low pressure passageway or high-pressure gallery intercommunication to effectively avoid the maloperation to take place, improve convenient to use nature and experience.

Secondly, only one ball core is designed, the filling port can be controlled to be communicated with the low-pressure channel or the high-pressure channel, the structure is simplified, the distance between each part can be reduced, the whole structure is compact, and the occupied space is reduced.

In the refrigerant double-meter group, the axis of the valve rod is vertical to the axis of the filling port, the overflowing channel consists of two overflowing sections which are vertically arranged and are strip-shaped, and the central axis of one overflowing section can coincide with the central axis of the filling port by rotating the spherical core.

In the refrigerant double-meter set, the high-pressure channel outlet, the low-pressure channel outlet and the filling port are positioned on the same side of the block body, and the filling port is positioned between the high-pressure channel outlet and the low-pressure channel outlet.

In foretell refrigerant pair of table group, two manometers set up side by side, and two manometers distribute along the disk seat axial, and the manometer includes pressure measurement mouth and display part, and two display parts set up back to back, still are equipped with two pressure measurement passageways in the block, and the entry of two pressure measurement passageways communicates high-pressure channel and low pressure passageway respectively, and the export of two pressure measurement passageways communicates two pressure measurement mouths respectively.

In the refrigerant double-gauge group, the outlet of the high-pressure channel and one of the pressure gauges are distributed on a straight line, and the outlet of the low-pressure channel and the other pressure gauge are distributed on a straight line. By adopting the design, the whole pressure measuring meter has a more compact structure.

In the refrigerant double-meter group, the outer end of the valve rod is fixedly connected with a knob, the outer side of the block body is fixedly provided with a limiting rod parallel to the valve rod, the knob is provided with two positioning surfaces distributed along the circumferential direction of the valve rod, the limiting rod is positioned between the two positioning surfaces, and the two positioning surfaces can be respectively abutted against the limiting rod by rotating the valve rod. When the locating surface butts against the limiting rod, the filling port is communicated with the low-pressure channel or the high-pressure channel, so that the operation difficulty is further reduced, and the use convenience is improved.

In foretell refrigerant pair of tables group, the block in be equipped with along the bar hole of disk seat axial extension, the bar hole is located low pressure passageway one side, bar hole one end and low pressure passageway intercommunication, and the bar hole other end seals, the bar downthehole sealed be fixed with the body, body and the coaxial setting of disk seat, the body falls into the chamber one and the chamber two that arrange along the disk seat axial with the bar hole, chamber one and chamber two are through the tube intercommunication, foretell chamber one is foretell cavity, still be equipped with the outage in the block, outage one end and foretell chamber two intercommunication, the body, chamber two and outage three constitute foretell high pressure channel, and the outage other end is high pressure channel's export.

In the refrigerant double-surface group, one end of the strip-shaped hole, which is far away from the low-pressure channel, is opened and closed by the sealing piece fixedly connected with the block body, the pipe body is tightly pressed on one valve seat to form sealing, the other valve seat is tightly pressed on the bottom wall of the strip-shaped hole to form sealing, and a spring which enables the pipe body to move towards the direction of the spherical core is arranged between the pipe body and the sealing piece.

When the mounting device is mounted, the pipe body, the ball core and the valve seat are sequentially arranged in the strip-shaped hole; when the ball valve is used, a medium in the ball core is discharged into the pipe body through the corresponding valve seat and then discharged into the high-pressure channel through the pipe body; under the spring action, make body and bar hole diapire cooperation press from both sides the ball core subassembly of tight location by disk seat and ball core constitution, make above-mentioned each part accomplish the location in step to effectively reduce the equipment process, improve the equipment convenience.

In the refrigerant double-meter group, the side wall of the pipe body is provided with a drainage hole in a penetrating manner, and the drainage hole is opposite to the second cavity. The drainage hole is beneficial to enabling the medium flowing into the pipe body to flow into the second cavity more quickly, and therefore pressure measuring efficiency is improved.

In the above-mentioned refrigerant pair of tables group, the sealing member be the glass window, this glass window includes barrel and the transparent form glass piece of shaping in the barrel of spiro union in the bar is downthehole, and body and barrel coaxial arrangement. A user can visually know whether the liquid refrigerant is filled with bubbles or not through the glass sheet.

In the refrigerant double-gauge set, the spring is a belleville spring, and two end faces of the belleville spring respectively abut against the cylinder and the pipe body. By adopting the design, the interference on the observation of the glass window can be effectively avoided.

As another scheme, in the refrigerant double-surface group, the sealing element is a plug fixed in the strip-shaped hole, and the side wall of the plug is in close contact with the wall of the strip-shaped hole to form sealing.

In the refrigerant double-meter set, the block body is provided with a through hole for the valve rod to extend into, a pressing sleeve is arranged in the through hole, the pressing sleeve is sleeved outside the valve rod and is fixedly connected with the block body in a sealing manner, the valve rod and the pressing sleeve are sealed through a first sealing ring, and a limiting structure for limiting the axial movement of the valve rod is arranged in the through hole.

In the refrigerant double-meter group, the limiting structure comprises an annular convex edge formed on the inner wall of the through hole and an annular convex shoulder formed on the outer wall of the valve rod, the annular convex shoulder is positioned between the annular convex edge and the first sealing ring, and two end faces of the annular convex shoulder respectively abut against the inner wall of the pressing sleeve and the annular convex edge.

As another scheme, in the refrigerant double-meter group, the limiting structure includes an annular blocking edge formed on the inner wall of the pressing sleeve, a blocking ring screwed in the pressing sleeve, and an annular blocking shoulder formed on the side wall of the valve rod, and two end faces of the annular blocking shoulder respectively abut against the annular blocking edge and the blocking ring.

Compared with the prior art, the refrigerant double-meter set has the following advantages:

1. in this two table group, only need operate valve rod alright control filling mouth intercommunication low pressure passageway or high-pressure gallery once, and at every turn the operation back filling mouth only with low pressure passageway or high-pressure gallery intercommunication to effectively avoid the maloperation to take place, improve convenient to use nature and experience.

2. Only one ball core is designed to control the filling port to be communicated with the low-pressure channel or the high-pressure channel, so that the structure is simplified, the distance between each part can be reduced, the whole structure is compact, and the occupied space is reduced.

3. Under the action of the spring, the pipe body and the inner wall of the flow guide channel are matched to clamp and position the ball core assembly consisting of the valve seat and the ball core, so that all the parts are synchronously positioned, the assembly procedures are effectively reduced, and the assembly convenience is improved.

Drawings

Fig. 1 is a schematic perspective view of a refrigerant dual-surface set.

Fig. 2 is a schematic cross-sectional view of a refrigerant dual-surface set.

Fig. 3 is a schematic view of the mounting structure of the valve stem.

Fig. 4 is a perspective view of the knob.

In the figure, 1, block; 1a, a cavity; 1b, a high-pressure channel; 1b1, drain hole; 1b2, Chamber II; 1c, a low-pressure channel; 1d, measuring pressure channels; 1e, a filling port; 2. a valve seat; 3. a ball core; 3a, a flow passage; 4. a valve stem; 4a, an annular shoulder; 5. pressing the sleeve; 6. A first sealing ring; 7. a pipe body; 7a, drainage holes; 8. a second sealing ring; 9. a spring; 10. A glass window; 10a, a cylinder body; 10b, a glass sheet; 11. a pressure gauge; 12. a knob; 12a, a positioning surface; 13. a limiting rod.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the double gauge set includes a block body 1 having a filling port 1e, and a cavity 1a, and a high pressure passage 1b and a low pressure passage 1c provided on both sides of the cavity 1a are provided in the block body 1. The high pressure passage 1b and the low pressure passage 1c each have an inlet and an outlet, and in the present embodiment, the number of inlets and outlets on the high pressure passage 1b and the low pressure passage 1c is 1. Inlets of the high-pressure channel 1b and the low-pressure channel 1c are communicated with the cavity 1 a; outlets of the high pressure passage 1b and the low pressure passage 1c are located on an outer surface of the block body 1 to smoothly discharge the medium in the high pressure passage 1b or the low pressure passage 1 c.

Specifically, two valve seats 2 which are arranged in parallel and are annular are fixed in the cavity 1a in a sealing mode, the two valve seats 2 are distributed along the arrangement direction of the high-pressure channel 1b and the low-pressure channel 1c, and inner holes of the two valve seats 2 are respectively communicated with inlets of the high-pressure channel 1b and the low-pressure channel 1 c. Install ball core 3 between two disk seats 2, the connected mode of ball core 3 and disk seat 2 is current: the two valve seats 2 are provided with annular spherical surfaces matched with the ball cores 3, and the ball cores 3 are clamped between the two annular spherical surfaces. As shown in fig. 2, a through L-shaped overflowing channel 3a is arranged in the ball core 3, the filling port 1e is located between the two valve seats 2, a valve rod 4 is arranged outside the block 1, the inner end of the valve rod 4 extends into the block 1 and is connected with the ball core 3, the valve rod 4 is rotatably connected with the block 1, a seal is formed between the valve rod 4 and the block 1, and the two ends of the overflowing channel 3a can be respectively communicated with the filling port 1e and an inner hole of one of the valve seats 2 by rotating the ball core 3.

Wherein the content of the first and second substances,

the axis of the valve rod 4 is vertical to the axis of the filling port 1e, the overflowing channel 3a is composed of two overflowing sections which are vertically arranged and are strip-shaped, and the central axis of one overflowing section can coincide with the central axis of the filling port 1e by rotating the ball core 3.

The connection of the valve stem 4 and the ball element 3 is prior art, with particular reference to existing ball valves. As shown in fig. 3 and 4, the outer end of the valve rod 4 is fixedly connected with a knob 12, the outer side of the block body 1 is fixed with a limiting rod 13 parallel to the valve rod 4, the knob 12 is provided with two positioning surfaces 12a distributed along the circumferential direction of the valve rod 4, the limiting rod 13 is positioned between the two positioning surfaces 12a, and the two positioning surfaces 12a can be abutted against the limiting rod 13 by rotating the valve rod 4. When the positioning surface 12a abuts against the limiting rod 13, the filling port 1e is communicated with the low-pressure channel 1c or the high-pressure channel 1b, so that the operation difficulty is further reduced, and the use convenience is improved.

The valve stem 4 is mounted as follows: as shown in fig. 3, the block body 1 is provided with a through hole for the valve rod 4 to extend into, the through hole is internally provided with a pressing sleeve 5, the pressing sleeve 5 is sleeved outside the valve rod 4, the pressing sleeve 5 is fixedly connected with the block body 1 in a sealing manner, the valve rod 4 and the pressing sleeve 5 are sealed through a sealing ring 6, and the through hole is internally provided with a limiting structure for limiting the axial movement of the valve rod 4. In the embodiment, the limiting structure comprises an annular convex edge formed on the inner wall of the through hole and an annular convex shoulder 4a formed on the outer wall of the valve rod 4, the annular convex shoulder 4a is positioned between the annular convex edge and the first sealing ring 6, and two end faces of the annular convex shoulder 4a respectively abut against the inner wall of the pressing sleeve 5 and the annular convex edge.

The valve seat 2 is mounted as follows: be equipped with in the block 1 along 2 axially extended bar holes of disk seat, the bar hole is located low pressure passageway 1c one side, bar hole one end and low pressure passageway 1c intercommunication, and the bar hole other end seals. The strip-shaped hole is internally and hermetically fixed with a tube body 7, and the tube body 7 and the valve seat 2 are coaxially arranged. In this embodiment, form sealedly through two 8 sealing washers between body 7 outer wall and the bar hole pore wall. The tube body 7 divides the strip-shaped hole into a first cavity and a second cavity 1b2 which are axially arranged along the valve seat 2, the first cavity is communicated with the second cavity 1b2 through the tube body 7, the first cavity is the cavity 1a, a liquid discharge hole 1b1 is further arranged in the block body 1, one end of the liquid discharge hole 1b1 is communicated with the second cavity 1b2, the tube body 7, the second cavity 1b2 and the liquid discharge hole 1b1 form the high-pressure channel 1b, and the other end of the liquid discharge hole 1b1 is an outlet of the high-pressure channel 1 b.

Further, one end of the strip-shaped hole, which is far away from the low-pressure channel 1c, is opened and the opening is sealed by a sealing element fixedly connected with the block body 1. The tube body 7 is tightly pressed on one valve seat 2 to form a seal, the other valve seat 2 is tightly pressed on the bottom wall of the strip-shaped hole to form a seal, and a spring 9 which enables the tube body 7 to have a moving trend towards the direction of the ball core 3 is arranged between the tube body 7 and the seal. The side wall of the tube body 7 is provided with a drainage hole 7a in a penetrating way, and the drainage hole 7a is opposite to the second cavity 1b 2. The drainage hole 7a facilitates the medium flowing into the pipe body 7 to flow into the second cavity 1b2 more quickly, so that the pressure measuring efficiency is improved. Under the effect of spring 9, make body 7 and bar hole diapire cooperation press from both sides the tight 3 subassemblies of ball core that constitute of location by disk seat 2 and ball core 3, make above-mentioned each part accomplish the location in step to effectively reduce the equipment process, improve the equipment convenience.

In the present embodiment, the sealing member is a glass window 10, the glass window 10 includes a cylinder 10a screwed in the strip-shaped hole and a transparent glass sheet 10b molded in the cylinder 10a, and the tube 7 and the cylinder 10a are coaxially disposed. The user can intuitively know whether the liquid refrigerant is filled with the bubbles through the glass sheet 10 b. Preferably, the spring 9 is a belleville spring 9, and both end surfaces of the belleville spring 9 are respectively abutted against the cylindrical body 10a and the pipe body 7.

As shown in fig. 1 and 2, two pressure gauges 11 for respectively detecting pressures in the high pressure passage 1b and the low pressure passage 1c are fixedly arranged outside the block body 1. The pressure gauge 11 is an existing product, which is commercially available. The two pressure gauges 11 are arranged in parallel, and the two pressure gauges 11 are axially distributed along the valve seat 2. The pressure gauge 11 comprises pressure measuring ports and display parts, the two display parts are arranged back to back, two pressure measuring channels 1d are further arranged in the block body 1, inlets of the two pressure measuring channels 1d are respectively communicated with the high-pressure channel 1b and the low-pressure channel 1c, and outlets of the two pressure measuring channels 1d are respectively communicated with the two pressure measuring ports. Further, the outlet of the high-pressure channel 1b, the outlet of the low-pressure channel 1c and the filling port 1e are positioned on the same side of the block body 1, and the filling port 1e is positioned between the outlet of the high-pressure channel 1b and the outlet of the low-pressure channel 1 c; the outlet of the high-pressure channel 1b and one pressure gauge 11 are distributed on a straight line, and the outlet of the low-pressure channel 1c and the other pressure gauge 11 are distributed on a straight line, so that the whole pressure gauge has a more compact structure.

When in use, the refrigerant is injected from the filling port 1 e; when the refrigerant is at high pressure, the valve rod 4 is rotated to enable the filling port 1e to be communicated with the high-pressure channel 1b, and the high-pressure refrigerant is discharged into the high-pressure channel 1b through the flow channel 3a and the flow guide channel and finally discharged through the other end of the high-pressure channel 1 b; when the refrigerant is at low pressure, the valve rod 4 is rotated to communicate the filling port 1e with the low-pressure passage 1c, and the low-pressure refrigerant is discharged into the low-pressure passage 1c through the flow passage 3a and the flow guide passage and finally discharged through the other end of the low-pressure passage 1 c.

Example two

The second embodiment is basically the same as the first embodiment in structure and principle, and the difference lies in: the sealing element is a plug fixed in the strip-shaped hole, and the side wall of the plug is in close contact with the wall of the strip-shaped hole to form sealing.

EXAMPLE III

The structure and principle of the third embodiment are basically the same as those of the first embodiment, and the differences are that: the limiting structure comprises an annular blocking edge formed on the inner wall of the pressing sleeve 5, a blocking ring screwed in the pressing sleeve 5 and an annular blocking shoulder formed on the side wall of the valve rod 4, and two end faces of the annular blocking shoulder are respectively abutted to the annular blocking edge and the blocking ring.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A refrigerant double-meter group comprises a block body (1) with a filling port (1e), wherein a cavity (1a) and a high-pressure channel (1b) and a low-pressure channel (1c) which are arranged at two sides of the cavity (1a) are arranged in the block body (1), inlets of the high-pressure channel (1b) and the low-pressure channel (1c) are communicated with the cavity (1a), outlets of the high-pressure channel (1b) and the low-pressure channel (1c) are positioned on the outer surface of the block body (1), the refrigerant double-meter group is characterized in that two valve seats (2) which are arranged in parallel and are annular are fixed in the cavity (1a) in a sealing manner, inner holes of the two valve seats (2) are respectively communicated with inlets of the high-pressure channel (1b) and the low-pressure channel (1c), a ball core (3) is arranged between the two valve seats (2), a through overflowing channel (3a) which is L-shaped is arranged in the ball core (3), the block (1) is equipped with valve rod (4) outward, and the inner of valve rod (4) stretches into block (1) and is connected with ball core (3), and valve rod (4) and block (1) rotate to be connected and form sealedly between the two, rotate ball core (3) and can make overflowing passageway (3a) both ends communicate the hole of filler (1e) and one of them disk seat (2) respectively.

2. The refrigerant double-meter group according to claim 1, wherein the axis of the valve rod (4) is perpendicular to the axis of the filling port (1e), the overflowing channel (3a) is composed of two overflowing sections which are vertically arranged and both of which are strip-shaped, and the central axis of one of the overflowing sections can coincide with the central axis of the filling port (1e) by rotating the spherical core (3).

3. The refrigerant double-gauge group according to claim 1 or 2, wherein two pressure gauges (11) for respectively detecting pressures in the high-pressure passage (1b) and the low-pressure passage (1c) are arranged outside the block body (1), the two pressure gauges (11) are arranged in parallel, the two pressure gauges (11) are axially distributed along the valve seat (2), the pressure gauge (11) comprises a pressure measuring port and a display part, the two display parts are arranged in a back-to-back manner, two pressure measuring passages (1d) are further arranged in the block body (1), inlets of the two pressure measuring passages (1d) are respectively communicated with the high-pressure passage (1b) and the low-pressure passage (1c), and outlets of the two pressure measuring passages (1d) are respectively communicated with the two pressure measuring ports.

4. The refrigerant double-meter group according to claim 1 or 2, wherein the outer end of the valve rod (4) is fixedly connected with a knob (12), a limiting rod (13) parallel to the valve rod (4) is fixed on the outer side of the block body (1), two positioning surfaces (12a) distributed along the circumferential direction of the valve rod (4) are arranged on the knob (12), the limiting rod (13) is located between the two positioning surfaces (12a), and the two positioning surfaces (12a) can be respectively abutted against the limiting rod (13) by rotating the valve rod (4).

5. The refrigerant double-surface group according to claim 1 or 2, wherein a strip-shaped hole extending along the axial direction of the valve seat (2) is arranged in the block body (1), the strip-shaped hole is positioned on one side of the low-pressure channel (1c), one end of the strip-shaped hole is communicated with the low-pressure channel (1c), the other end of the strip-shaped hole is sealed, a pipe body (7) is fixed in the strip-shaped hole in a sealing manner, the pipe body (7) and the valve seat (2) are coaxially arranged, the pipe body (7) divides the strip-shaped hole into a first cavity and a second cavity (1b2) which are axially arranged along the valve seat (2), the first cavity and the second cavity (1b2) are communicated through the pipe body (7), the first cavity is the hollow cavity (1a), a liquid discharge hole (1b1) is further arranged in the block body (1), one end of the liquid discharge hole (1b1) is communicated with the second cavity (1b2), the pipe body (7), the second cavity (1b2, and the other end of the liquid discharge hole (1b1) is an outlet of the high-pressure channel (1 b).

6. The refrigerant double-surface group according to claim 5, characterized in that one end of the strip-shaped hole far from the low-pressure channel (1c) is opened and is blocked by a sealing element fixedly connected with the block body (1), the pipe body (7) is tightly pressed on one valve seat (2) to form a seal, the other valve seat (2) is tightly pressed on the bottom wall of the strip-shaped hole to form a seal, and a spring (9) enabling the pipe body (7) to have a moving trend towards the ball core (3) is arranged between the pipe body (7) and the sealing element.

7. The refrigerant double-meter set as claimed in claim 6, wherein the side wall of the tube body (7) is provided with a drainage hole (7a) therethrough, and the drainage hole (7a) is opposite to the second chamber (1b 2).

8. The refrigerant double-surface set according to claim 6, wherein the sealing member is a glass window (10), the glass window (10) comprises a cylinder (10a) screwed in the strip-shaped hole and a transparent glass sheet (10b) formed in the cylinder (10a), and the tube body (7) and the cylinder (10a) are coaxially arranged.

9. The refrigerant double-meter group according to claim 1, wherein the block body (1) is provided with a through hole for the valve rod (4) to extend into, a pressing sleeve (5) is arranged in the through hole, the pressing sleeve (5) is sleeved outside the valve rod (4), the pressing sleeve (5) is fixedly connected with the block body (1) in a sealing manner, the valve rod (4) and the pressing sleeve (5) form a seal through a first sealing ring (6), and a limiting structure for limiting the axial movement of the valve rod (4) is arranged in the through hole.

10. The refrigerant double-gauge group according to claim 3, wherein the outlet of the high-pressure channel (1b) and one of the pressure gauges (11) are arranged in a straight line, and the outlet of the low-pressure channel (1c) and the other pressure gauge (11) are arranged in a straight line.