P-type water seal base plate device with sealed pressurizing groove structure and determining method

Abstract

According to the P-type water seal base plate device with the sealing pressurization groove structure and the determining method, the influence verification of the pressurization groove structure on the contact strength sigma of a rubber water seal material is calculated, and the influence verification of the pressurization groove structure on the sealing performance T sealing of a rubber water seal in the pressure permeation direction is calculated; structural elements such as groove types, groove section specifications, groove spacing delta and the like for reliable pressurization sealing of the water seal base plate of the hydraulic steel gate are defined, and the sealing performance of the P-type water seal of the gate is improved and strengthened. The gate P-type water seal has the following remarkable advantages that an auxiliary acting force F groove is formed through a water seal base plate pressurization groove structure, so that the overall sealing performance T sealing of the rubber water seal is improved, and the sealing performance of the gate P-type water seal is further improved and strengthened. The composite effect of factors such as high-water-head working conditions, complex fluid-solid coupling loads and super-elastic characteristics of rubber water seal materials is overcome, reliable sealing of the gate is guaranteed, and important engineering practical significance is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of gate reliable sealing enhancement, and in particular to a P-type water seal pad device with a sealing boosting groove structure and a determination method thereof. Background Art

[0002] For a long time, water seal gaskets have been mainly used to clamp and protect the rubber water seals of gates, and to achieve the gate sealing and water-blocking function by compressing the P-type rubber water seal P head. They are key components to ensure reliable sealing of gates.

[0003] In order to achieve reliable clamping and padding of the P-type rubber water seal, the working surface of the water seal pad in contact with the rubber water seal is usually in a flat form. However, in recent years, with the emergence of high head conditions such as pumped storage projects, the existing P-type rubber water seal is difficult to meet the sealing requirements of the gate under high head conditions due to the combined effects of complex fluid-solid coupling loads and the superelastic properties of rubber water seal materials. The force generated by pre-compression is difficult to meet the sealing requirements of the gate under high head conditions, often causing poor gate sealing performance, high-pressure water overflow, etc. These phenomena become more obvious as the gate sealing head increases, which will lead to the failure of the gate's sealing and water-retaining function under high head conditions. Summary of the invention

[0004] The first object of the present invention is to provide a P-type water seal pad device with a sealing booster groove structure to provide reliable sealing protection for hydraulic gates when operating under high head conditions.

[0005] To this end, the above-mentioned purpose of the present invention is achieved through the following technical solutions:

[0006] A P-type water seal pad device with a sealing and pressurizing groove structure, characterized in that it includes a water seal pad, a P-type rubber water seal, a water seal pressure plate, a water seal clamping bolt and a hydraulic steel gate.

[0007] The water seal gasket has a sealing and pressurizing groove structure, and the water seal gasket is located directly below the P-type rubber water seal; the sealing and pressurizing groove structure is arranged along the working surface of one side of the sealing cavity of the water seal gasket;

[0008] The water seal pressure plate is located directly above the P-type rubber water seal, and the water seal pressure plate is used to clamp the P-type rubber water seal;

[0009] The water seal clamping bolt passes through the water seal pressure plate, the P-type rubber water seal and the water seal gasket, so as to clamp the P-type rubber water seal with the water seal pressure plate and the water seal gasket, and fix the water seal pressure plate, the P-type rubber water seal and the water seal gasket on the hydraulic steel gate.

[0010] While adopting the above technical solutions, the present invention may also adopt or combine the following technical solutions:

[0011] As a preferred technical solution of the present invention: the sealing booster groove structure is a triangular groove cross-section with a bottom angle of α=60-70°, forming a triangular groove with an inclination angle of 10-30° and a deep outside and a shallow inside.

[0012] As a preferred technical solution of the present invention: the sealing booster groove structure is a trapezoidal groove cross-section, with a bottom angle α=60-80°, forming a trapezoidal groove with an inclination angle of 10-30° and a deep outer side and a shallow inner side.

[0013] As a preferred technical solution of the present invention: the sealing booster groove structure is a rectangular groove cross-section with an aspect ratio of 0.25 to 0.5, forming a rectangular groove with an inclination angle of 10 to 30 degrees and a deep outside and a shallow inside.

[0014] The sealed pressurized groove structure is arranged according to the following steps:

[0015] (1) Arrangement of the working surface of the water seal gasket on one side of the sealing cavity;

[0016] (2) Structural elements such as the groove type, groove cross-section specifications (length L, width C, bottom angle α, inclination angle β), and groove spacing Δ of the water seal gasket booster groove structure;

[0017] (3) Multiple groups of booster slot structures with the same slot type and slot cross-section specifications are arranged continuously and evenly distributed.

[0018] The specific steps to clarify the structural elements of the sealing booster groove structure of the water seal gasket, such as the groove type, groove section specifications (length L, width C, bottom angle α, inclination angle β), groove spacing Δ, etc., are as follows:

[0019] (1) Considering the working water head H of the hydraulic steel gate, the type of the booster tank structure shall be determined according to Table 1;

[0020] Table 1 Selection of slot types for booster slot structure

[0021] Working head H(m) Slot Type ＜60m rectangle 50～100m Trapezoid 90～140m triangle

[0022] Note: The booster tank structure is not suitable for operating conditions above 140m.

[0023] (2) Considering the gate working water pressure H and the allowable stress [σ] of the pre-compression material of the P-type rubber water seal, the cross-sectional specifications of the booster tank structure are checked according to formula (1).

[0024]

[0025] In the formula, F N The force of the P-type rubber water seal under pre-compression, F is the spatial composite force of the P-type rubber water seal being squeezed and deformed by the water pressure H, 槽 is the auxiliary force caused by the booster tank structure, S水封 is the profile surface of the rubber water seal in contact with one side of the sealing cavity, determined by simulation results or test experiments, S 槽截面 It is the profile surface of the sealed booster groove structure that contacts the water pressure. For rectangular groove type, it is S 槽截面 =L·C, for trapezoidal groove type, select S 槽截面 =L·CL 2 tan(α), triangular slot type, take S 槽截面 =L·C2, σ is the contact strength of the water seal gasket pressure groove structure on the water seal material, E 橡胶 is the elastic modulus of the water seal rubber material, and ε is the deformation caused by the pre-compression of the water seal.

[0026] (3) Sealing performance of rubber water seal along the pressure penetration direction T 密封 , calculated according to formula (2),

[0027]

[0028] Where, T 密封 is the overall sealing performance of the rubber water seal, T 原有 The original sealing performance of the P-type rubber water seal without the booster groove structure pad, T 增压槽 To increase the sealing performance of the P-type rubber water seal behind the booster groove structure pad, The P-type rubber water seal is subjected to the pre-compressed normal force and the water pressure H, and the P head is deformed to fit the guide rail Г' length, and has the sealing characteristics, ф2(Г|F 槽 ) is the auxiliary water pressure F of the P-type rubber water seal due to the influence of the seal booster groove structure 槽 The sealing characteristics after the P-head is deformed and fits the guide rail by a length of Г. Г' is the change in the P-type rubber water seal when there is no booster groove structure and the P-head is deformed and fits the guide rail, which is determined by simulation results or test experiments. Г is the change in the P-type rubber water seal when there is a booster groove structure and the P-head is deformed and fits the guide rail, which is determined by simulation results or test experiments. S 水封 is the profile surface where the rubber water seal contacts one side of the sealing cavity. Spatial compound effect, S 槽截面 It is the profile surface of the sealed booster groove structure that contacts the water pressure. For rectangular groove type, it is S 槽截面 = L·C, trapezoidal groove type When the triangular slot type is selected E 橡胶 is the elastic modulus of the water seal rubber material, ε is the deformation caused by the pre-compression of the water seal;

[0029] (4) Consider the gate working water pressure H and the rubber water seal sealing performance T 密封, calculate the sealing performance safety factor K of the rubber water seal along the pressure penetration direction according to formula (3),

[0030]

[0031] Where K is the safety factor of the sealing performance of the rubber water seal along the pressure penetration direction, and H is the working water pressure of the gate.

[0032] The process of verifying and analyzing the impact of the water seal gasket booster groove structure on the contact strength of the rubber water seal material includes:

[0033] (1) Compare the calculated contact influence strength σ of the water seal gasket seal booster groove structure on the water seal material with the allowable index [σ] of the rubber water seal material;

[0034] (2) Determine whether the contact strength σ of the water seal gasket seal booster groove structure on the water seal material exceeds the allowable index [σ] of the rubber water seal material;

[0035] (3) Analyze the contact effect of the water seal gasket seal booster groove structure on the water seal material. If it does not exceed the allowable index [σ] of the rubber water seal material, the water seal gasket booster groove structure can meet the contact effect strength requirement of the water seal material. Otherwise, there is a risk of water seal material gate sealing failure, and the corresponding warning information is generated;

[0036] (4) If the booster groove structure of the sealing gasket cannot meet the contact impact strength requirements of the water seal material, consider changing the groove type, changing the groove cross-sectional specifications, reducing the groove spacing Δ and other measures to recalculate to meet the sealing needs of the gate P-type water seal operation.

[0037] The process of verifying and analyzing the auxiliary sealing performance information of the water seal pad booster groove structure and the reliable sealing of the hydraulic steel gate water seal includes:

[0038] (1) Compare the calculated sealing performance safety factor K with the allowable index of the gate water seal's reliable sealing performance;

[0039] (2) Determine whether the sealing performance safety factor K of the water seal gasket booster groove structure exceeds 0.7;

[0040] (3) Analyze and obtain the safety information of the gate water seal sealing performance. If the sealing performance safety factor K does not exceed 0.7, the increased auxiliary back pressure performance of the booster groove structure can meet the requirements of enhancing the gate sealing performance. Otherwise, there is a risk of gate sealing failure, and the corresponding warning information is generated;

[0041] (4) If the sealing performance safety factor K exceeds 0.7, consider changing the groove type, changing the groove cross-section specifications, reducing the groove spacing Δ and other measures to recalculate to meet the sealing requirements of the gate P-type water seal operation.

[0042] The present invention also provides a method for determining the P-type water seal pad device having the sealing and pressurizing groove structure.

[0043] To this end, the above-mentioned purpose of the present invention is achieved through the following technical solutions:

[0044] A method for determining a P-type water seal pad device having a sealing booster groove structure comprises the following steps:

[0045] S1. The booster groove structure on the working surface of the water seal pad is composed of multiple groups of booster grooves of the same cross-section type arranged at intervals and evenly distributed along one side of the P-type rubber water seal P head;

[0046] S2. Structural elements for reliable pressurization and sealing of hydraulic steel gate water seal pads;

[0047] The structural elements include: slot type, slot cross-section specifications, and slot spacing Δ; the slot cross-section specifications include: length L, width C, bottom angle α, and inclination angle β;

[0048] S3. Calculate the contact influence strength σ of the water seal gasket pressurized groove structure on the rubber water seal material, and calculate the sealing performance T of the water seal gasket pressurized groove structure on the rubber water seal along the pressure penetration direction 密封 , calculate and analyze the sealing performance K of the booster groove structure;

[0049] S4. Verify and analyze the impact of the pressure groove structure of the water seal pad on the contact strength of the rubber water seal material;

[0050] S5. Verify, analyze and compare the auxiliary sealing performance information of the water seal gasket booster groove structure with the reliable sealing of the hydraulic steel gate water seal.

[0051] While adopting the above technical solutions, the present invention may also adopt or combine the following technical solutions:

[0052] As a preferred technical solution of the present invention: the steps for determining the slot type are as follows:

[0053] S101. Considering the working water head H of the hydraulic steel gate, the type of the booster tank structure shall be determined according to Table 1;

[0054] Table 1 Selection of slot types for booster slot structure

[0055]

[0056]

[0057] Note: The booster tank structure is not suitable for operating conditions above 140m.

[0058] As a preferred technical solution of the present invention: the contact influence strength σ of the rubber water seal material, the sealing performance T of the rubber water seal along the pressure penetration direction 密封 And the sealing performance K of the boost groove structure can be determined according to the following steps:

[0059] S301. Considering the gate working water pressure H and the allowable stress [σ] of the pre-compression material of the P-type rubber water seal, the cross-sectional specifications of the booster tank structure are checked according to formula (1):

[0060]

[0061] In the formula, F N The force of the P-type rubber water seal under pre-compression, F is the spatial composite force of the P-type rubber water seal being squeezed and deformed by the water pressure H, 槽 is the auxiliary force caused by the booster tank structure, S 水封 is the profile surface of the rubber water seal in contact with one side of the sealing cavity, determined by simulation results or test experiments, S 槽截面 It is the profile surface of the sealed booster groove structure that contacts the water pressure. For rectangular groove type, it is S 槽截面 =L·C, for trapezoidal groove type, select S 槽截面 =L·CL 2 tan(α), triangular slot type, take S 槽截面 =L·C2, σ is the contact strength of the water seal gasket pressure groove structure on the water seal material, E 橡胶 is the elastic modulus of the water seal rubber material, ε is the deformation caused by the pre-compression of the water seal;

[0062] S302, Sealing performance of rubber water seal along pressure penetration direction T 密封 , calculated according to formula (2),

[0063]

[0064] Where, T 密封 is the overall sealing performance of the rubber water seal, T 原有 The original sealing performance of the P-type rubber water seal without the booster groove structure pad, T 增压槽 To increase the sealing performance of the P-type rubber water seal behind the booster groove structure pad, The P-type rubber water seal is subjected to the pre-compressed normal force and the water pressure H, and the P head is deformed to fit the guide rail Г' length, and has the sealing characteristics, ф2(Г|F 槽 ) is the auxiliary water pressure F of the P-type rubber water seal due to the influence of the seal booster groove structure 槽The sealing characteristics after the P-head is deformed and fits the guide rail by a length of Г. Г' is the change in the P-type rubber water seal when there is no booster groove structure and the P-head is deformed and fits the guide rail, which is determined by simulation results or test experiments. Г is the change in the P-type rubber water seal when there is a booster groove structure and the P-head is deformed and fits the guide rail, which is determined by simulation results or test experiments. S 水封 is the profile surface where the rubber water seal contacts one side of the sealing cavity. Spatial compound effect, S 槽截面 It is the profile surface of the sealed booster groove structure that contacts the water pressure. For rectangular groove type, it is S 槽截面 = L·C, trapezoidal groove type When the triangular slot type is selected E 橡胶 is the elastic modulus of the water seal rubber material, ε is the deformation caused by the pre-compression of the water seal;

[0065] S303, considering the gate working water pressure H and rubber water seal sealing performance T 密封 , calculate the sealing performance safety factor K of the rubber water seal along the pressure penetration direction according to formula (3),

[0066]

[0067] Where K is the safety factor of the sealing performance of the rubber water seal along the pressure penetration direction, and H is the working water pressure of the gate.

[0068] As a preferred technical solution of the present invention: the specific steps of step S4 are as follows:

[0069] S401, comparing the calculated contact influence strength σ of the water seal gasket sealing booster groove structure on the water seal material with the allowable index [σ] of the rubber water seal material;

[0070] S402, determining whether the contact influence strength σ of the sealing booster groove structure of the water seal gasket plate on the water seal material exceeds the allowable index [σ] of the rubber water seal material;

[0071] S403, analyzing the contact effect of the water seal gasket seal booster groove structure on the water seal material. If it does not exceed the allowable index [σ] of the rubber water seal material, the water seal gasket booster groove structure can meet the contact effect strength requirement of the water seal material. Otherwise, there is a risk of water seal material gate sealing failure, and corresponding warning information is generated;

[0072] S404. If the booster groove structure of the sealing gasket cannot meet the contact impact strength requirements of the water seal material, consider replacing the groove type, changing the groove cross-section specifications, reducing the groove spacing Δ, and recalculating to meet the sealing needs of the gate P-type water seal operation.

[0073] As a preferred technical solution of the present invention: the specific steps of step S5 are as follows:

[0074] S501, comparing the calculated sealing performance safety factor K with the allowable index of the gate water seal reliable sealing performance;

[0075] S502, judging whether the sealing performance safety factor K of the water seal gasket booster groove structure exceeds 0.7;

[0076] S503, analyzing and obtaining the safety information of the gate water seal sealing performance. If the sealing performance safety factor K does not exceed 0.7, the increased auxiliary back pressure performance of the booster groove structure can meet the requirements of enhancing the gate sealing performance. Otherwise, there is a risk of gate sealing failure, and corresponding warning information is generated;

[0077] S504. If the sealing performance safety factor K exceeds 0.7, consider replacing the groove type, changing the groove cross-section specifications, reducing the groove spacing Δ, and recalculating to meet the gate P-type water seal operation sealing requirements.

[0078] The present invention provides a P-type water seal pad device with a sealing booster groove structure and a determination method, which verifies the influence of the booster groove structure on the contact strength σ of the rubber water seal material, and calculates the sealing performance T of the booster groove structure on the rubber water seal along the pressure penetration direction. 密封 The impact check is carried out to clarify the groove type, groove section specifications (length L, width C, bottom angle α, inclination angle β), groove spacing Δ and other structural elements of the hydraulic steel gate water seal gasket for reliable pressurization sealing, and improve and strengthen the sealing performance of the gate P-type water seal. Compared with the prior art, the present invention has the following significant advantages: the present invention forms an auxiliary force F through the water seal gasket pressurization groove structure 槽 , thereby increasing the overall sealing performance of the rubber water seal T 密封 , further improving and strengthening the sealing performance of the gate P-type water seal. Overcoming the combined effects of high head conditions, complex fluid-solid coupling loads and superelastic properties of rubber water seal materials, ensuring reliable sealing of the gate, has important engineering practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0079] Figure 1 A top view of a P-type water seal pad device having a sealed pressurized groove structure;

[0080] Figure 2 for Figure 1 Sectional view in the AA direction;

[0081] Figure 3 It is a schematic diagram of the cross section of the booster groove of the gate P-type water seal pad;

[0082] Figure 4 This is a schematic diagram of the force on the gate rubber water seal P head;

[0083] In the figure: 1-sealed booster groove structure, 2-water seal pressure plate, 3-water seal gasket, 4-P-type rubber water seal, 5-water seal clamping bolt, 6-hydraulic steel gate, 11-boosting groove structure, 111-triangular groove section, 112-trapezoidal groove section, 113-rectangular groove section. DETAILED DESCRIPTION

[0084] The present invention is described in detail below with reference to specific embodiments.

[0085] like Figure 1-3 As shown, a P-type water seal gasket device with a sealing and pressurizing groove structure is composed of a water seal gasket 3 with a sealing and pressurizing groove structure located directly below the P-type rubber water seal 4, the P-type rubber water seal 4 providing a sealing elastomer function, and a water seal pressure plate 2 located directly above the P-type rubber water seal 4 with a clamping function. The water seal clamping bolts 5 are used to clamp the P-type rubber water seal 4 by the water seal pressure plate 2 and the water seal gasket 3, and the water seal pressure plate 2, the P-type rubber water seal 4 and the water seal gasket 3 are fixed on the hydraulic steel gate 6.

[0086] The sealed booster groove structure is arranged according to the following steps:

[0087] (1) Arrangement of the working surface of the water seal gasket on one side of the sealing cavity;

[0088] (2) Structural elements such as the groove type, groove cross-section specifications (length L, width C, bottom angle α, inclination angle β), and groove spacing Δ of the water seal gasket booster groove structure;

[0089] (3) Multiple groups of booster slot structures with the same slot type and slot cross-section specifications are arranged continuously and evenly distributed.

[0090] The groove type specifies the triangle, trapezoid, rectangle and other cross-sectional types of the water seal gasket booster groove. Its geometric structure shapes include:

[0091] (1) A triangular groove section (base angle α = 60-70°) is formed with an inclination angle of 10-30° and a deep outer and shallow inner triangular groove;

[0092] (2) A trapezoidal groove section (bottom angle α = 60-80°) is formed with an inclination angle of 10-30° and a deep outer and shallow inner groove;

[0093] (3) A rectangular groove with an inclination angle of 10 to 30° and a shallow inner side and a deep outer side is formed by a rectangular groove cross section (length-to-width ratio 0.25 to 0.5).

[0094] The specific steps to clarify the structural elements of the water seal gasket booster groove structure, such as groove type, groove section specifications (length L, width C, bottom angle α, inclination angle β), groove spacing Δ, etc. are as follows:

[0095] (1) Considering the working water head H of the hydraulic steel gate, the type of the booster tank structure shall be determined according to Table 1;

[0096] Table 1 Selection of slot types for booster slot structure

[0097]

[0098]

[0099] Note: The booster tank structure is not suitable for operating conditions above 140m.

[0100] (2) Figure 4 As shown in the figure, considering the gate working water pressure H and the allowable stress [σ] of the pre-compression material of the P-type rubber water seal, the groove section specifications of the booster groove structure are checked according to formula (1).

[0101]

[0102] In the formula, F N The force of the P-type rubber water seal under pre-compression, F is the spatial composite force of the P-type rubber water seal being squeezed and deformed by the water pressure H, 槽 is the auxiliary force caused by the booster tank structure, S 水封 is the profile surface of the rubber water seal in contact with one side of the sealing cavity, determined by simulation results or test experiments, S 槽截面 It is the profile surface of the sealed booster groove structure that contacts the water pressure. For rectangular groove type, it is S 槽截面 =L·C, for trapezoidal groove type, select S 槽截面 =L·CL 2 tan(α), triangular slot type, take S 槽截面 =L·C2, σ is the contact strength of the water seal gasket pressure groove structure on the water seal material, E 橡胶 is the elastic modulus of the water seal rubber material, and ε is the deformation caused by the pre-compression of the water seal.

[0103] (3) Sealing performance of rubber water seal along the pressure penetration direction T 密封 , calculated according to formula (2),

[0104]

[0105] Where, T 密封 is the overall sealing performance of the rubber water seal, T 原有 The original sealing performance of the P-type rubber water seal without the booster groove structure pad, T 增压槽 To increase the sealing performance of the P-type rubber water seal behind the booster groove structure pad, The P-type rubber water seal is subjected to the pre-compressed normal force and the water pressure H, and the P head is deformed to fit the guide rail Г' length, and has the sealing characteristics, ф2(Г|F 槽 ) is the auxiliary water pressure F of the P-type rubber water seal due to the influence of the seal booster groove structure 槽 The sealing characteristics after the P-head is deformed and fits the guide rail by a length of Г. Г' is the change in the P-type rubber water seal when there is no booster groove structure and the P-head is deformed and fits the guide rail, which is determined by simulation results or test experiments. Г is the change in the P-type rubber water seal when there is a booster groove structure and the P-head is deformed and fits the guide rail, which is determined by simulation results or test experiments. S 水封 is the profile surface where the rubber water seal contacts one side of the sealing cavity. Spatial compound effect, S 槽截面 It is the profile surface of the sealed booster groove structure that contacts the water pressure. For rectangular groove type, it is S 槽截面 = L·C, trapezoidal groove type When the triangular slot type is selected E 橡胶 is the elastic modulus of the water seal rubber material, ε is the deformation caused by the pre-compression of the water seal;

[0106] (4) Consider the gate working water pressure H and the rubber water seal sealing performance T 密封 , calculate the sealing performance safety factor K of the rubber water seal along the pressure penetration direction according to formula (3),

[0107]

[0108] Where K is the safety factor of the sealing performance of the rubber water seal along the pressure penetration direction, and H is the working water pressure of the gate.

[0109] The process of verifying and analyzing the impact of the water seal gasket booster groove structure on the contact strength of the rubber water seal material includes:

[0110] (1) Compare the calculated contact influence strength σ of the water seal gasket seal booster groove structure on the water seal material with the allowable index [σ] of the rubber water seal material;

[0111] (2) Determine whether the contact strength σ of the water seal gasket seal booster groove structure on the water seal material exceeds the allowable index [σ] of the rubber water seal material;

[0112] (3) Analyze the contact effect of the water seal gasket seal booster groove structure on the water seal material. If it does not exceed the allowable index [σ] of the rubber water seal material, the water seal gasket booster groove structure can meet the contact effect strength requirement of the water seal material. Otherwise, there is a risk of water seal material gate sealing failure, and the corresponding warning information is generated;

[0113] (4) If the water seal gasket booster groove structure cannot meet the contact impact strength requirements of the water seal material, consider changing the groove type, changing the groove cross-sectional specifications, reducing the groove spacing Δ and other measures to recalculate to meet the gate P-type water seal operating sealing needs.

[0114] The process of verifying and analyzing the auxiliary sealing performance information of the water seal pad booster groove structure and the reliable sealing of the hydraulic steel gate water seal includes:

[0115] (1) Compare the calculated sealing performance safety factor K with the allowable index of the gate water seal's reliable sealing performance;

[0116] (2) Determine whether the sealing performance safety factor K of the water seal gasket booster groove structure exceeds 0.7;

[0117] (3) Analyze and obtain the safety information of the gate water seal sealing performance. If the sealing performance safety factor K does not exceed 0.7, the increased auxiliary back pressure performance of the booster groove structure can meet the requirements of enhancing the gate sealing performance. Otherwise, there is a risk of gate sealing failure, and the corresponding warning information is generated;

[0118] (4) If the sealing performance safety factor K exceeds 0.7, consider changing the groove type, changing the groove cross-section specifications, reducing the groove spacing Δ and other measures to recalculate to meet the sealing requirements of the gate P-type water seal operation.

[0119] The above-mentioned specific implementation methods are used to explain the present invention and are only preferred embodiments of the present invention, rather than limiting the present invention. Any modifications, equivalent substitutions, improvements, etc. made to the present invention within the spirit of the present invention and the protection scope of the claims shall fall within the protection scope of the present invention.

Claims

1. A P-type water seal pad device with a sealed pressurized groove structure, characterized in that: It includes water seal pad, P-type rubber water seal, water seal pressure plate, water seal clamping bolt and hydraulic steel gate. The water seal gasket has a sealing and pressurizing groove structure, and the water seal gasket is located directly below the P-type rubber water seal; the sealing and pressurizing groove structure is arranged along the working surface of one side of the sealing cavity of the water seal gasket; The water seal pressure plate is located directly above the P-type rubber water seal, and the water seal pressure plate is used to clamp the P-type rubber water seal; The water seal clamping bolt passes through the water seal pressure plate, the P-type rubber water seal and the water seal gasket, so as to clamp the P-type rubber water seal with the water seal pressure plate and the water seal gasket, and fix the water seal pressure plate, the P-type rubber water seal and the water seal gasket on the hydraulic steel gate.

2. The device according to claim 1, characterized in that: The sealing and pressurizing groove structure is a triangular groove cross section with a bottom angle α of 60 to 70°, forming a triangular groove with an inclination angle of 10 to 30° and a deep outer side and a shallow inner side.

3. The device according to claim 1, characterized in that: The sealing and pressurizing groove structure is a trapezoidal groove cross section with a bottom angle α of 60 to 80°, forming a trapezoidal groove with an inclination angle of 10 to 30° and a shallow inner side and a deep outer side.

4. The device according to claim 1, characterized in that: The sealing and pressurizing groove structure is a rectangular groove cross-section with a length-to-width ratio of 0.25 to 0.5, forming a rectangular groove with an inclination angle of 10 to 30 degrees and a deep outer side and a shallow inner side.

5. The method for determining a P-type water seal pad device with a sealing and pressurizing groove structure according to claim 1, characterized in that: The method comprises the following steps: S1. The booster groove structure on the working surface of the water seal pad is composed of multiple groups of booster grooves of the same cross-section type arranged at intervals and evenly distributed along one side of the P-type rubber water seal P head; S2. Structural elements for reliable pressurization and sealing of hydraulic steel gate water seal pads; The structural elements include: slot type, slot cross-section specifications, and slot spacing Δ; the slot cross-section specifications include: length L, width C, bottom angle α, and inclination angle β; S3. Calculate the contact influence strength σ of the water seal gasket pressurized groove structure on the rubber water seal material, and calculate the sealing performance T of the water seal gasket pressurized groove structure on the rubber water seal along the pressure penetration direction 密封 , calculate and analyze the sealing performance K of the booster groove structure; S4. Verify and analyze the impact of the pressure groove structure of the water seal pad on the contact strength of the rubber water seal material; S5. Verify, analyze and compare the auxiliary sealing performance information of the water seal gasket booster groove structure with the reliable sealing of the hydraulic steel gate water seal.

6. The method according to claim 5, characterized in that: The steps to determine the slot type are as follows: S101. Considering the working water head H of the hydraulic steel gate, the type of the booster tank structure shall be determined according to Table 1; Table 1 Selection of slot types for booster slot structure 。 7. The method according to claim 5, characterized in that: The contact influence strength σ of the rubber water seal material and the sealing performance T of the rubber water seal along the pressure penetration direction 密封 And the sealing performance K of the boost groove structure can be determined according to the following steps: S301. Considering the gate working water pressure H and the allowable stress [σ] of the P-type rubber water seal pre-compression material, the cross-sectional specifications of the booster tank structure are checked according to formula (1): In the formula, F N The force of the P-type rubber water seal under pre-compression, F is the spatial composite force of the P-type rubber water seal being squeezed and deformed by the water pressure H, 槽 is the auxiliary force caused by the booster tank structure, S 水封 is the profile surface of the rubber water seal in contact with one side of the sealing cavity, determined by simulation results or test experiments, S 槽截面 It is the profile surface of the sealed booster groove structure that contacts the water pressure. For rectangular groove type, it is S 槽截面 =L·C, for trapezoidal groove type, select S 槽截面 =L·CL 2 / tan(α), when the slot type is triangular, take S 槽截面 =L·C / 2, σ is the contact strength of the water seal gasket pressure groove structure on the water seal material, E 橡胶 is the elastic modulus of the water seal rubber material, ε is the deformation caused by the pre-compression of the water seal; S302, Sealing performance of rubber water seal along pressure penetration direction T 密封 , calculated according to formula (2), Where, T 密封 is the overall sealing performance of the rubber water seal, T 原有 The original sealing performance of the P-type rubber water seal without the booster groove structure pad, T 增压槽 To increase the sealing performance of the P-type rubber water seal behind the booster groove structure pad, The P-type rubber water seal is subjected to the pre-compressed normal force and water pressure H, and the P head is deformed to fit the guide rail Г' length, and has the sealing characteristics, ф2(Г|F 槽 ) is the auxiliary water pressure F of the P-type rubber water seal due to the influence of the seal booster groove structure 槽 The sealing characteristics after the P-head is deformed and fits the guide rail by a length of Г. Г' is the change in the P-type rubber water seal when there is no booster groove structure and the P-head is deformed and fits the guide rail, which is determined by simulation results or test experiments. Г is the change in the P-type rubber water seal when there is a booster groove structure and the P-head is deformed and fits the guide rail, which is determined by simulation results or test experiments. S 水封 is the profile surface where the rubber water seal contacts one side of the sealing cavity. Spatial compound effect, S 槽截面 It is the profile surface of the sealed booster groove structure that contacts the water pressure. For rectangular groove type, it is S 槽截面 = L·C, trapezoidal groove type When the triangular slot type is selected E 橡胶 is the elastic modulus of the water seal rubber material, ε is the deformation caused by the pre-compression of the water seal; S303, considering the gate working water pressure H and rubber water seal sealing performance T 密封 , calculate the sealing performance safety factor K of the rubber water seal along the pressure penetration direction according to formula (3), Where K is the safety factor of the sealing performance of the rubber water seal along the pressure penetration direction, and H is the working water pressure of the gate.

8. The method according to claim 5, characterized in that: The specific steps of step S4 are as follows: S401, comparing the calculated contact influence strength σ of the water seal gasket sealing booster groove structure on the water seal material with the allowable index [σ] of the rubber water seal material; S402, determining whether the contact influence strength σ of the sealing booster groove structure of the water seal gasket plate on the water seal material exceeds the allowable index [σ] of the rubber water seal material; S403, analyzing the contact effect of the water seal gasket seal booster groove structure on the water seal material. If it does not exceed the allowable index [σ] of the rubber water seal material, the water seal gasket booster groove structure can meet the contact effect strength requirement of the water seal material. Otherwise, there is a risk of water seal material gate sealing failure, and corresponding warning information is generated; S404. If the booster groove structure of the sealing gasket cannot meet the contact impact strength requirements of the water seal material, consider replacing the groove type, changing the groove cross-section specifications, reducing the groove spacing Δ, and recalculating to meet the sealing needs of the gate P-type water seal operation.

9. The method according to claim 5, characterized in that: The specific steps of step S5 are as follows: S501, comparing the calculated sealing performance safety factor K with the allowable index of the gate water seal reliable sealing performance; S502, judging whether the sealing performance safety factor K of the water seal gasket booster groove structure exceeds 0.7; S503, analyzing and obtaining the safety information of the gate water seal sealing performance. If the sealing performance safety factor K does not exceed 0.7, the increased auxiliary back pressure performance of the booster groove structure can meet the requirements of enhancing the gate sealing performance. Otherwise, there is a risk of gate sealing failure, and corresponding warning information is generated; S504. If the sealing performance safety factor K exceeds 0.7, consider replacing the groove type, changing the groove cross-section specifications, reducing the groove spacing Δ, and recalculating to meet the gate P-type water seal operation sealing requirements.

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