A three-valve group with pressure detection mechanism

Abstract

The utility model relates to the technical field related to three-valve groups, specifically a three-valve group with a pressure detection mechanism, including a positive and negative pressure measuring chamber and a low-pressure valve, a high-pressure valve is arranged at the front end of the positive and negative pressure measuring chamber, a balancing valve is installed at the top end of the positive and negative pressure measuring chamber, and fixing bolts are passed through the four sides of the balancing valve, and the low-pressure valve is installed at the rear end of the positive and negative pressure measuring chamber, a pressure detection mechanism is arranged on one side of the positive and negative pressure measuring chamber, and a connecting pipe is movably installed at the top end of the pressure detection mechanism. In the utility model, the detection chamber is connected and installed inside the positive and negative pressure measuring chamber through a connecting hole, and the positive and negative pressure measuring chamber is connected and installed on the connecting pipe and the pressure gauge through the detection chamber, so that the connecting pipe and the pressure gauge can be installed and sealed as a whole, and the three-valve group can be pressure-detected, and the detection chamber, the fixing hole and the fixing bolt are sealed at the installation gap between the pressure gauge and the positive and negative pressure measuring chamber, and the three-valve group can be sealed before pressure detection.

Description

Technical Field

[0001] The utility model relates to the technical field of three-valve groups, in particular to a three-valve group with a pressure detection mechanism. Background Art

[0002] The three-valve group is composed of three valves that communicate with each other. According to the role of each valve in the system, it can be divided into: the left side is the high-pressure valve, the right side is the low-pressure valve, and the middle is the balance valve. The three-valve group is used in conjunction with the differential transmitter to connect or disconnect the positive and negative pressure measurement chambers and the pressure-inducing point; or to disconnect or connect the positive and negative pressure measurement chambers.

[0003] The existing three-valve group uses a pressure gauge to detect pressure. There is an installation gap at the connection between the pressure gauge and the positive and negative pressure measuring chambers. The three-valve group needs to be assembled separately. The external connection is easy to disconnect or the positive and negative pressure measuring chambers are blocked, etc., which affects the sealing of the three-valve group connection. Utility Model Content

[0004] The purpose of the utility model is to provide a three-valve group with a pressure detection mechanism to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions, the three-valve group with pressure detection mechanism: comprises positive and negative pressure measuring chambers and low-pressure valves, the front end of the positive and negative pressure measuring chambers is provided with a high-pressure valve, the top end of the positive and negative pressure measuring chambers is provided with a balancing valve, and the balancing valve is penetrated by fixing bolts around the balancing valve, the low-pressure valve is installed at the rear end of the positive and negative pressure measuring chambers, one side of the positive and negative pressure measuring chambers is provided with a pressure detection mechanism, and the top end of the pressure detection mechanism is movably provided with a connecting pipe, the top end of the connecting pipe is provided with a pressure gauge, and the other side of the positive and negative pressure measuring chambers is provided with a measuring chamber sealing mechanism.

[0006] Preferably, the pressure detection mechanism and the measuring chamber sealing mechanism are fixed to the positive and negative pressure measuring chamber by means of fixing bolts.

[0007] Preferably, the pressure detection mechanism is connected to a connecting pipe, and the connecting pipe performs pressure detection via a pressure gauge.

[0008] Preferably, the pressure detection mechanism comprises a detection chamber, a fixing hole and a connecting hole. The fixing hole is provided at the top of the detection chamber, and the connecting hole is provided inside the detection chamber.

[0009] Preferably, the detection chamber and the connecting hole are fixedly mounted on the positive and negative pressure measuring chamber via fixing holes.

[0010] Preferably, the measuring chamber sealing mechanism comprises a sealing chamber, a pressure valve hole and a connecting end, the sealing chamber is provided with a pressure valve hole inside, and the connecting end is movably installed inside the pressure valve hole.

[0011] Preferably, the connecting end is movably mounted inside the sealing chamber and the pressure valve hole.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model sets fixing holes and fixing bolts, and the detection chamber is connected through the connecting hole and installed inside the positive and negative pressure measuring chamber. The positive and negative pressure measuring chambers are connected through the detection chamber and installed on the connecting pipe and the pressure gauge, which is convenient for the connecting pipe and the pressure gauge to be installed and sealed as a whole, and the three-valve group can be pressure tested. The detection chamber, the fixing hole and the fixing bolt are sealed at the installation gap between the pressure gauge and the positive and negative pressure measuring chamber, and the three-valve group can be sealed before pressure testing.

[0014] 2. The utility model seals the sealing chamber and the pressure valve hole through the connecting end. The connecting end, the sealing chamber and the pressure valve hole are sealed and buckled at the three-valve group connection end. The three-valve group connection end is assembled separately to avoid disconnection of the external connection, which can maintain normal conduction of the positive and negative pressure measuring chambers and improve the sealing performance of the three-valve group connection end. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a structural diagram of the pressure detection mechanism of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the sealing mechanism of the measuring chamber of the utility model.

[0018] In the figure: 1. Positive and negative pressure measuring chamber; 2. High-pressure valve; 3. Pressure detection mechanism; 4. Connecting pipe; 5. Pressure gauge; 6. Balance valve; 7. Fixing bolt; 8. Low-pressure valve; 9. Sealing mechanism of measuring chamber; 10. Detection chamber; 11. Fixing hole; 12. Connecting hole; 13. Sealing chamber; 14. Pressure valve hole; 15. Connecting end. DETAILED DESCRIPTION

[0019] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1

[0021] See also Figure 1-Figure 3 The utility model provides a technical solution, including a positive and negative pressure measuring chamber 1 and a low-pressure valve 8, a high-pressure valve 2 is arranged at the front end of the positive and negative pressure measuring chamber 1, a balancing valve 6 is installed at the top end of the positive and negative pressure measuring chamber 1, and fixing bolts 7 are passed through the four sides of the balancing valve 6, and the low-pressure valve 8 is installed at the rear end of the positive and negative pressure measuring chamber 1, a pressure detection mechanism 3 is arranged on one side of the positive and negative pressure measuring chamber 1, and a connecting pipe 4 is movably installed at the top end of the pressure detection mechanism 3, a pressure gauge 5 is arranged at the top end of the connecting pipe 4, and a measuring chamber sealing mechanism 9 is installed on the other side of the positive and negative pressure measuring chamber 1, the high-pressure valve 2 is movably installed on the positive and negative pressure measuring chamber 1, and the low-pressure valve 8 is movably installed at the rear end of the positive and negative pressure measuring chamber 1, and is controlled by the balancing valve 6 on the positive and negative pressure measuring chamber 1, and then the pressure detection mechanism 3 components are movably installed on the positive and negative pressure measuring chamber 1, the connecting pipe 4 and the pressure gauge 5 are connected. The gauge 5 is connected and installed on the positive and negative pressure measuring chamber 1, and the positive and negative pressure measuring chamber 1 can be pressure-tested, so that the measuring chamber sealing mechanism 9 assembly is sealed at the connection end of the positive and negative pressure measuring chamber 1 for sealing, and the pressure detection mechanism 3 and the measuring chamber sealing mechanism 9 are fixed on the positive and negative pressure measuring chamber 1 through the fixing bolt 7, and the fixing bolt 7 is threadedly penetrated through the pressure detection mechanism 3 and the measuring chamber sealing mechanism 9, so that the pressure detection mechanism 3 and the measuring chamber sealing mechanism 9 assembly are sealed on the positive and negative pressure measuring chamber 1 through the fixing bolt 7 snap-on, and three-valve group sealing is performed, and the pressure detection mechanism 3 is connected with the connecting pipe 4, and the connecting pipe 4 is pressure-tested through the pressure gauge 5, and the pressure gauge 5 is connected and installed on the pressure detection mechanism 3 assembly through the connecting pipe 4, and the pressure detection mechanism 3 assembly is threadedly penetrated through the positive and negative pressure measuring chamber 1 through the fixing bolt 7 for pressure detection.

[0022] Embodiment 2

[0023] like Figure 2 and Figure 3As shown, the pressure detection mechanism 3 includes a detection chamber 10, a fixing hole 11 and a connecting hole 12. The top of the detection chamber 10 is provided with a fixing hole 11, and the inside of the detection chamber 10 is provided with a connecting hole 12. The detection chamber 10 and the connecting hole 12 are fixedly installed on the positive and negative pressure measuring chamber 1 through the fixing hole 11. The connecting pipe 4 and the pressure gauge 5 are separately installed through the detection chamber 10. The detection chamber 10 is fixedly installed through the fixing hole 11 and the fixing bolt 7, so that the connecting hole 12 on the detection chamber 10 is connected and installed on the positive and negative pressure measuring chamber 1. The detection chamber 10 is connected and installed inside the positive and negative pressure measuring chamber 1 through the connecting hole 12. The positive and negative pressure measuring chamber 1 is connected and installed on the connecting pipe 4 and the pressure gauge 5 through the detection chamber 10, which is convenient for the connecting pipe 4 and the pressure gauge 5 to be installed and sealed as a whole, and the three-valve group can be pressure-detected. The detection chamber 10, The fixing hole 11 and the fixing bolt 7 are sealed at the installation gap between the pressure gauge 5 and the positive and negative pressure measuring chamber 1, and the three-valve group can be sealed before pressure detection. The measuring chamber sealing mechanism 9 includes a sealing chamber 13, a pressure valve hole 14 and a connecting end 15. The sealing chamber 13 is provided with a pressure valve hole 14, and the pressure valve hole 14 is movably installed with a connecting end 15. The connecting end 15 is movably installed inside the sealing chamber 13 and the pressure valve hole 14, and the sealing chamber 13 and the pressure valve hole 14 are fixedly connected inside the positive and negative pressure measuring chamber 1. The sealing chamber 13 and the pressure valve hole 14 are blocked by the connecting end 15. The connecting end 15, the sealing chamber 13 and the pressure valve hole 14 are sealed and buckled at the connection end of the three-valve group. The connection end of the three-valve group is assembled separately to avoid disconnection of the external connection, so that the positive and negative pressure measuring chamber 1 can be kept normally conductive, and the sealing performance of the connection end of the three-valve group is improved.

[0024] In actual use, the pressure detection mechanism 3 component is movably installed on the positive and negative pressure measuring chamber 1, and the connecting pipe 4 and the pressure gauge 5 are connected and installed on the positive and negative pressure measuring chamber 1, so that the positive and negative pressure measuring chamber 1 can be pressure-detected, so that the measuring chamber sealing mechanism 9 component is sealed at the connection end of the positive and negative pressure measuring chamber 1 for sealing, and the sealing chamber 13 and the pressure valve hole 14 are blocked through the connecting end 15, and the connecting end 15, the sealing chamber 13 and the pressure valve hole 14 are sealed and buckled at the connection end of the three-valve group, and the connection end of the three-valve group is assembled separately to avoid disconnection of the external connection, and the detection chamber 10 is fixedly installed through the fixing hole 11 and the fixing bolt 7, so that the connecting hole 12 on the detection chamber 10 is connected and installed on the positive and negative pressure measuring chamber 1, and the detection chamber 10 is connected and installed inside the positive and negative pressure measuring chamber 1 through the connecting hole 12, and the positive and negative pressure measuring chamber 1 is connected and installed on the connecting pipe 4 and the pressure gauge 5 through the detection chamber 10, so that the connecting pipe 4 and the pressure gauge 5 are installed and sealed as a whole.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-valve group with a pressure detection mechanism, characterized in that: The three-valve group with a pressure detection mechanism comprises a positive and negative pressure measuring chamber (1) and a low-pressure valve (8), wherein a high-pressure valve (2) is arranged at the front end of the positive and negative pressure measuring chamber (1), a balancing valve (6) is installed at the top end of the positive and negative pressure measuring chamber (1), and fixing bolts (7) are passed through the four sides of the balancing valve (6), and the low-pressure valve (8) is installed at the rear end of the positive and negative pressure measuring chamber (1), a pressure detection mechanism (3) is arranged on one side of the positive and negative pressure measuring chamber (1), and a connecting pipe (4) is movably installed at the top end of the pressure detection mechanism (3), and a pressure gauge (5) is arranged at the top end of the connecting pipe (4), and a measuring chamber sealing mechanism (9) is installed on the other side of the positive and negative pressure measuring chamber (1).

2. A three-valve group with a pressure detection mechanism according to claim 1, characterized in that: The pressure detection mechanism (3) and the measuring chamber sealing mechanism (9) are fixed on the positive and negative pressure measuring chamber (1) via a fixing bolt (7).

3. A three-valve group with a pressure detection mechanism according to claim 1, characterized in that: The pressure detection mechanism (3) is connected to the connecting pipe (4), and the connecting pipe (4) performs pressure detection via a pressure gauge (5).

4. A three-valve group with a pressure detection mechanism according to claim 1, characterized in that: The pressure detection mechanism (3) comprises a detection chamber (10), a fixing hole (11) and a connection hole (12); the fixing hole (11) is provided at the top of the detection chamber (10), and the connection hole (12) is provided inside the detection chamber (10).

5. A three-valve group with a pressure detection mechanism according to claim 4, characterized in that: The detection chamber (10) and the connection hole (12) are fixedly mounted on the positive and negative pressure measurement chamber (1) via a fixing hole (11).

6. A three-valve group with a pressure detection mechanism according to claim 1, characterized in that: The measuring chamber sealing mechanism (9) comprises a sealing chamber (13), a pressure valve hole (14) and a connecting end (15); the sealing chamber (13) is provided with a pressure valve hole (14) inside, and the connecting end (15) is movably installed inside the pressure valve hole (14).

7. A three-valve group with a pressure detection mechanism according to claim 6, characterized in that: The connecting end (15) is movably mounted inside the sealing chamber (13) and the pressure valve hole (14).

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